搜索： a184137-编号：a184137
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A184130型
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| 行和列按非递减顺序排列的n X 2 0..2数组的数量。 |
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6, 29, 112, 356, 972, 2359, 5217, 10704, 20647, 37818, 66287, 111865, 182651, 289698, 447814, 676515, 1001148, 1454203, 2076834, 2920610, 4049518, 5542241, 7494735, 10023130, 13266981, 17392896, 22598569, 29117247, 37222661, 47234452, 59524124
(列表;图表;参考;听;历史;文本;内部格式)
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配方奶粉
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经验公式：a（n）=9*a（n-1）-36*a（n-2）+84*a（n3）-126*a。
G.f.：x*（2-x）*（3-11*x+28*x^2-42*x^3+39*x^4-22*x^5+7*x^6-x^7）/（1-x）^9。
a（n）=（40320+79344*n+64140*n^2+37884*n^3+16009*n^4+3696*n^5+490*n^6+36*n*n^7+n^8）/40320。
（结束）
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例子
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针对3 X 2的一些解决方案：
..0..1…..1..2…..0..2…..0..1…..0..0…..0..1…..0..0…..0..2…..0..1…..0..2
..0..1....2..0....1..1....0..2....0..2....1..2....0..0....2..1....1..2....2..1
..2..2....2..1....1..2....2..2....0..2....2..2....0..2....2..1....2..0....2..2
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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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已批准
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10, 112, 1169, 10020, 70243, 414848, 2126064, 9681099, 39886396, 150795172, 528970102, 1737120632, 5379657012, 15806662276, 44290055378, 118862126126, 306675218582, 763173754851, 1837012424988, 4287769072145, 9726214524190
(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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配方奶粉
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经验公式：a（n）=27*a（n-1）-351*a（n-2）+2925*a（n3）-17550*a（4-4）+80730*a（-n5）-296010*a（6-6）+888030*a（7-7）-2220075*a a（n-15）-13037895*a（n-16）+8436285*a+17550*a（n-23）-2925*a（n-24）+351*a（n-25）-27*a（-n-26）+a（n-27）（=26次多项式）
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例子
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5X3的一些解决方案
..0..1..2....0..0..1....0..0..1....0..0..2....0..0..2....0..1..1....0..1..1
..1..0..0....0..0..2....0..2..2....0..1..2....0..1..0....0..1..2....0..1..2
..1..1..2....1..2..1....1..1..0....1..1..1....1..1..0....0..2..2....2..0..0
..1..1..2....1..2..1....1..2..0....1..2..1....1..1..2....0..2..2....2..0..2
..1..1..2....1..2..1....2..2..0....1..2..2....2..2..2....2..0..1....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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15, 356, 10020, 250841, 5136783, 86649029, 1235699769, 15270848022, 166834456961, 1636866521557, 14604220409727, 119695566470666, 908732269828858, 6435563608860009, 42766741187832311, 268044686453407075
(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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配方奶粉
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经验：a（n）=81*a（n-1）-3240*a（n-2）+85320*a（n3）-1663740*a（-n4）+25621596*a（n-5）-324540216*a）-1823288518168200*a（n-14）+8144022047817960*a（-15）-335940947249085*a（-16）+128447994798305325*a（n-17）-456703981505085600*a（n-18）+1514334254464231200*a 2720*a（n-27）-44478248753569790960*a（n-28）+812878297875644100720*a（n-29）-14089890496511308441248*a（n-30）+231801429744410661408*a a（n-37）-183461779104129314989200*a（n-38）+20227837183275796262800400*a（n-39）-212392290424395860814420*a（n-40）+212392290424395860814420*a 47）-53779686508403225492850*a（n-48）+36218972546475641658450*a（n-49）-2318014229741410661408*a（n-50）+14089890496511308441248*a）-95399637739311016800*a（n-58）+37189689288205989600*a（n-59）-13636219405675529520*a（n-60）+469443618839116720*a（n-61）-1514334254464231200*a（-62）+456703981505085600*a（-n-63）-12847994798305325*a（e-64）+335940947249085*a（n-65）-814422047817960*a 520*a（n-70）+1878392407320*a（n-71）-260887834350*a（n72）+32164253550*a（-n73）-3477216600*a（n-74）+324540216*a（n-75）-25621596*a
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例子
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3X4的一些解决方案
..0..0..0..1....0..0..1..2....0..0..1..2....0..0..1..2....0..0..1..2
..0..0..1..1....2..2..2..2....0..1..1..2....1..2..1..1....0..1..1..2
..2...2...2...1...2...2...2...2...2...1...0...2...0...0...2...1...0...0...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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21, 972, 70243, 5136783, 318174607, 16226388113, 692646032166, 25325301730396, 809428667338479, 22988798937359989, 587867998879645140, 13680436324388196991, 292276898997326389982, 5775131297680469786518
(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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3X5的一些解决方案
..0..0..0..0..0....0..0..1..2..2....0..1..1..2..2....0..0..1..1..2
..0..0..0..0..2....0..0..2..0..0....0..2..2..1..2....1..1..0..0..2
..0..0..1..2..0....1..1..1..0..0....1..2..2..1..2....2..2..0..2..0
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关键词
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非n
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28, 2359, 414848, 86649029, 16226388113, 2533164987353, 330480778987068, 36743249714104252, 3551368791876387512, 303434279544306336607, 23231135831680020721976, 1611379102051603304198082
(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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3X6的一些解决方案
..0..0..0..0..0..1....0..0..0..0..1..2....0..0..1..1..1..1....0..0..0..0..0..2
..0..0..1..2..2..0....0..0..1..1..0..0....0..2..0..1..1..2....0..0..1..2..2..0
..1..1..0..0..0..0....1..2..0..1..2..2....0..2..2..1..2..2....0..2..0..1..2..0
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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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36, 5217, 2126064, 1235699769, 692646032166, 330480778987068, 132171590850720635, 44958654878873680385, 13254294130125564125813, 3443901257202394752536535, 799652347582827921456558772
(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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例子
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3X7的一些解决方案
..0..0..0..0..2..2..2....0..0..0..0..0..2..2....0..0..0..0..1..2..2
..0..0..1..1..0..1..2....0..0..1..1..2..1..2....0..0..0..0..2..0..1
..0..0..1..1..2..0..1....0..1..1..1..1..2..0....0..1..1..2..1..0..0
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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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A184136号
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| 行和列按非递减顺序排列的n X 8 0..2数组的数量。 |
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+10
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45, 10704, 9681099, 15270848022, 25325301730396, 36743249714104252, 44958654878873680385, 46774077148795239899357, 42097203428804324322199398, 33324660689209130394508546845, 23530205707929325443339255048671
(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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例子
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3 X 8的一些解决方案
..0...0...0...0...1...2...0...0...0...0...1...1...0...0...0...0...0...0...0...1...1...1
..0..0..0..0..2..2..2..1....0..0..0..0..2..0..2..2....0..0..0..1..2..1..2..2
..0..0..1..1..1..2..2..2....0..0..1..1..1..1..0..0....0..0..0..2..0..2..1..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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