搜索: 编号:a197074
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A197074号
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| nX3 0..4数组的数量,其中每个元素x等于其水平和垂直邻接数等于3,1,2,4,0,其中x=0,1,2,3,4 |
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+0 1
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3, 13, 51, 205, 812, 3295, 13286, 53418, 215148, 866828, 3490915, 14058935, 56624663, 228059383, 918511377, 3699344410, 14899280605, 60007424663, 241682293896, 973385377892, 3920348996747, 15789363847963, 63592303009792
(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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每个0紧挨着0 3,每个1紧挨着1 1,每个2紧挨着2 2,每个3紧挨着3 4,每个4紧挨着4 0
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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)+3*a(n-2)+18*a(n3)+17*a(-n4)-8*a(4-5)-38*a 2*a(n-19)
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例子
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n=4的一些解
..0..0..1....0..0..0....0..0..0....1..0..0....0..0..0....1..2..2....0..0..0
..0..0..1....1..1..0....0..4..0....1..0..0....1..1..0....1..2..2....2..2..0
..0...2...2...0...0...0...0...0...0...0...0...0...0...0...0...0...0...0...0...2...2...0
..0..2..2....1..1..0....1..1..0....0..0..0....0..1..1....0..1..1....0..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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状态
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经核准的
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