搜索： a200553-编号：a200552
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A200546号
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| 具有零和和非零秒差的n+2元素的-1..1数组x（0..n+1）的数量 |
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4, 14, 26, 72, 142, 362, 778, 1938, 4366, 10628, 24532, 59138, 138680, 333014, 788374, 1890870, 4503208, 10803262, 25831504, 62025512, 148725902, 357516682, 859055042, 2067463940, 4975921904, 11988835382, 28892947100, 69685951942
(列表;图表;参考;听;历史;文本;内部格式)
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例子
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n=3的一些解
..0....1...-1...-1...-1....0....1...-1....1....0....1....0...-1....1....0....1
.-1....1...-1....1....1...-1....1....1...-1....1....0...-1....0...-1....1...-1
.-1...-1....1...-1....0....1...-1....1....0...-1....1....1....0....1...-1...-1
..1....0....0....1....1....1...-1...-1...-1...-1...-1....0....1...-1....1....1
..1...-1....1....0...-1...-1....0....0....1....1...-1....0....0....0...-1....0
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关键词
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非n
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已批准
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A200547号
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| 具有零和和非零秒差的n+2元素的-2..2数组x（0..n+1）的数量 |
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14, 76, 280, 1240, 4978, 21626, 91058, 393660, 1686980, 7309386, 31632968, 137600876, 599055566, 2615427970, 11433493630, 50075195034, 219589525108, 964264276780, 4238966033150, 18655002576606, 82175337524524
(列表;图表;参考;听;历史;文本;内部格式)
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链接
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例子
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n=3的一些解
..2....1....0....0...-2...-1....1....0....0....1...-2...-2...-1....0...-1....2
..0...-1....2...-2....1....1....0....2...-2....1....1...-1....2....0...-1...-1
.-1....1...-1....0...-1....0...-2...-2....2...-2....1....1....2...-1....1...-2
.-1...-1...-1....0....1....2...-1...-2...-1....2....0....0...-1....2....2....0
..0....0....0....2....1...-2....2....2....1...-2....0....2...-2...-1...-1....1
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关键词
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非n
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作者
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已批准
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A200548号
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| 具有零和和非零秒差的n+2元素的-3..3数组x（0..n+1）的数量 |
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30, 200, 1184, 7254, 43698, 266812, 1639804, 10152636, 63132188, 394016210, 2466471522, 15481097890, 97396742734, 614019893832, 3878005568152, 24532092598782, 155413031752230, 985836563404470, 6260856742508844
(列表;图表;参考;听;历史;文本;内部格式)
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链接
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例子
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n=3的一些解
..2....0....3...-2...-3...-1....0...-1....0....3....1...-2...-1...-1....3....0
.-3....1...-1....3....3....0...-1...-1....3...-2...-2....1....2....3...-3...-1
.-1...-1...-1...-3...-1...-1...-1....2....1....1....3...-3....3...-2....3....1
..3...-2....1....2...-2....1....0....2...-2...-3...-3....2...-3...-3...-1...-2
.-1....2...-2....0....3....1....2...-2...-2....1....1....2...-1....3...-2....2
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关键词
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非n
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作者
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已批准
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A200549号
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| 具有零和和非零秒差的n+2元素的-4..4数组x（0..n+1）的数量 |
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52, 446, 3396, 26850, 211374, 1689732, 13587804, 109957140, 893510530, 7288331916, 59637096784, 489325754576, 4024444316206, 33167657580268, 273853057747366, 2264784856966600, 18757225819498566, 155553439876468586
(列表;图表;参考;听;历史;文本;内部格式)
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链接
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例子
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n=3的一些解
..0....0...-3...-3...-1...-4...-1....1...-2...-3....0...-1...-1...-2....1...-3
..2...-1....3....2....1...-4....3....2...-3....0....3....1....3...-3...-2....1
.-4....2...-4....1...-2....1....0...-4....4...-3....4...-1...-2...-3....2....3
..0…-4….3….1…-1….3….2….4…-1….3…-3…-1…-1…-1….4…-1….3
..2....3....1...-1....3....4...-4...-3....2....3...-4....2....1....4...-2...-4
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关键词
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非n
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作者
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已批准
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A200550型
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| 具有零和和非零秒差的n+2元素的-5..5数组x（0..n+1）的数量 |
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+10
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80、836、7778、75792、737460、7286542、72366820、723237026、7258296910、73127883596、739101010202、7490787201124、76099633989974、774719436417776、7901415122713726、80719023935569240、825814487838111514
(列表;图表;参考;听;历史;文本;内部格式)
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链接
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例子
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n=3的一些解
..3....5....3....1...-3....2...-5...-1....0...-5...-4...-3...-5....0...-5....3
.-1....0...-2...-3....3...-4....5....5...-5...-3....3....2...-2...-3....1...-2
..0...-2....1....5...-1....1...-4...-3....4....1....0...-5....2....3....4....3
.-3...-2....0....2....2....1....3....3....4....3...-1....1....2....2...-2...-3
..1...-1...-2...-5...-1....0....1...-4...-3....4....2....5....3...-2....2...-1
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关键词
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非n
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作者
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状态
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已批准
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A200551型
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| 具有零和和非零秒差的n+2元素的-6..6数组x（0..n+1）的数量 |
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+10
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114, 1368, 15476, 178834, 2076774, 24378976, 288237528, 3427837106, 40950125796, 491063998130, 5907663402532, 71267752107030, 861806880210532, 10443265297671942, 126784115884242080, 1541722886174306634
(列表;图表;参考;听;历史;文本;内部格式)
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评论
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链接
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例子
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n=3的一些解
.-4....2....0...-1...-4...-3...-1....4...-2...-2....0....4...-5...-6...-2....2
..3....1....3....3....5....0...-2...-2....0....2....2....3....4....3....3...-4
.-1...-1....1...-1...-5....0....6....3....5....4...-1...-4...-3...-4....0....0
..1....0...-5....1...-2...-1...-2....1...-5...-5...-6...-2....0....6....2....6
..1...-2....1...-2....6....4...-1...-6....2....1....5...-1....4....1...-3...-4
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关键词
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非n
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作者
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状态
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已批准
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A200552号
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| 具有零和和非零秒差的n+2元素的-7..7数组x（0..n+1）的数量。 |
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+10
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154, 2134, 27806, 372150, 5012084, 68263780, 936121220, 12911643944, 178893425570, 2488110363432, 34717386812304, 485767803378730, 6813227225653584, 95761068651953630, 1348433104134460586
(列表;图表;参考;听;历史;文本;内部格式)
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抵消
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评论
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链接
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例子
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n=3的一些解
.-6....1...-7....5....0...-6....4....1....1....0....1...-4....7...-6...-3....2
..2...-3....5...-4....2....5...-6...-2....3...-1....2....0...-1....6...-4....0
..1...-2....2...-1...-4....4...-2....5....1....5....1....3....4...-1...-2....3
..2....1...-3....5...-4....2....4...-3....2...-2...-5....2...-3....1....5...-5
..1....3....3...-5....6...-5....0...-1...-7...-2....1...-1...-7....0....4....0
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交叉参考
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关键词
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非n
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作者
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状态
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已批准
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A200554号
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| 具有零和和非零秒差的4个元素的-n..n数组x（0..3）的数量。 |
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+10
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14, 76, 200, 446, 836, 1368, 2134, 3140, 4368, 5942, 7852, 10064, 12734, 15836, 19320, 23374, 27956, 33000, 38726, 45076, 51968, 59654, 68060, 77088, 87022, 97772, 109224, 121694, 135076, 149240, 164534, 180836, 198000, 216406, 235916, 256368
(列表;图表;参考;听;历史;文本;内部格式)
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评论
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链接
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配方奶粉
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经验公式：a（n）=2*a（n-1）-a（n-2）+2*a（n-3）-4*a（4-4）+2*a（n-5）-a“n-6”+2*a“n-7”-a“n-8”。
经验公式：2*x*（7+24*x+31*x^2+47*x^3+24*x^4+9*x^5+2*x^6）/（（1-x）^4*（1+x+x^2）^2）-科林·巴克2018年5月21日
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例子
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n=3的一些解决方案：
.-2....2....2...-1....2...-3...-2...-2....1...-3....0...-1....1....2...-2....2
..1...-3...-2....0...-1....3...-1....1....0....3...-1...-1...-2...-2...-1....1
..2....1....0...-1....0....2....3...-2....1...-1....2....1....0...-3....2...-3
.-1....0....0....2...-1...-2....0....3...-2....1...-1....1....1....3....1....0
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交叉参考
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关键词
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非n
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作者
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状态
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已批准
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26, 280, 1184, 3396, 7778, 15476, 27806, 46346, 72902, 109528, 158422, 222162, 303412, 405134, 530518, 683014, 866156, 1083954, 1340420, 1639900, 1986968, 2386470, 2843276, 3362828, 3950486, 4611980, 5353268, 6180592, 7100158, 8118840
(列表;图表;参考;听;历史;文本;内部格式)
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抵消
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1,1
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评论
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链接
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配方奶粉
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经验公式：a（n）=a（n-1）+2*a（n-2）-3*a（n-4）-3*a（n-5）+3*a（n6）+3*a（n-7）-2*a（m-9）-a（n-10）+a（n-11）。
经验公式：2*x*（13+127*x+426*x^2+826*x*x^3+1046*x^4+912*x^5+544*x^6+205*x^7+37*x^8+4*x^9）/（1-x）^5*（1+x）^2*（1+x+x^2）^2）-科林·巴克2018年5月21日
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例子
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n=3的一些解决方案：
..3...-2...-3....0...-2....3...-2....2...-3...-2...-1....2....1....2...-2....3
..0...-3....2...-1....3...-1...-2....2....3....3....1....2....1...-2....1...-1
.-2....1....1....3....0....1....2...-1....0...-3...-2...-2...-2....2...-3...-3
..2....2....1...-2....1...-3....1...-2....2...-1....2....1...-1...-3....1....2
.-3....2...-1....0...-2....0....1...-1...-2....3....0...-3....1....1....3...-1
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交叉参考
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关键词
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非n
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作者
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状态
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已批准
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A200556号
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| 具有零和和非零秒差的6个元素的-n..n数组x（0..5）的数量 |
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+10
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72, 1240, 7254, 26850, 75792, 178834, 372150, 705270, 1242888, 2067650, 3281874, 5009232, 7397868, 10621792, 14882672, 20413220, 27478160, 36376230, 47443518, 61054528, 77624122, 97610834, 121518006, 149895400, 183343046, 222512226
(列表;图表;参考;听;历史;文本;内部格式)
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抵消
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评论
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链接
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配方奶粉
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经验：a（n）=a（n-1）+a（n-2）+a
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例子
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n=3的一些解
..0….2…-3…0…-3…-1….0….0….1….1…-2….1….2…-1…-3
.-1...-3...-2....1...-3....2....1....0...-2....1....0....2....2....0....2....3
..2....1....1....0....2....1....1...-2....1....3....1....0...-3....0...-2....1
.-3….3….1….3…-2…-2….0….2….3…-3….1…-3….1….2….0…-2
.-1…-1….3…-3….3….2….1…-2…-2….1….3….0…-1….1….3….3
..3...-2....0...-1....3...-2...-3....2...-1...-3...-3....0...-1...-2....0...-2
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关键词
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非n
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作者
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状态
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已批准
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