搜索: 编号:a317857
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A317857型
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| 每个元素在水平、垂直或反对角线方向上不等于1、2或4且左上角元素为零的nX2 0..1数组的数量。 |
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+0 三
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1, 3, 6, 10, 21, 46, 102, 220, 491, 1077, 2393, 5271, 11682, 25799, 57090, 126209, 279123, 617274, 1364930, 3018713, 6675002, 14762294, 32643544, 72191407, 159639957, 353036505, 780698639, 1726457594, 3817890631, 8442936930
(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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1,2
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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)+4*a(n-2)-2*a
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示例
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n=5的一些解
..0..0. .0..1. .0..0. .0..1. .0..0. .0..0. .0..1. .0..1. .0..0. .0..1
..1..0. .0..1. .1..0. .1..0. .1..0. .1..1. .1..1. .1..1. .1..1. .1..1
..0..0. .0..1. .0..0. .1..1. .0..0. .1..1. .0..1. .0..0. .1..0. .1..0
..1..0. .0..1. .0..1. .0..1. .1..1. .0..1. .1..0. .0..0. .1..1. .0..0
..0..1. .0..1. .0..0. .1..0. .1..0. .1..0. .1..1. .1..1. .1..0. .0..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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经核准的
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