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A227123型 |
| nX4 0,1数组的数量,表示一些较大的(n+1)X5二进制数组的2X2子块,其和为零,后者的行和列按字典顺序非递减 |
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1
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5, 23, 81, 295, 1079, 3836, 12954, 41334, 124956, 359214, 985377, 2587934, 6528298, 15865511, 37249628, 84702904, 186968944, 401441143, 839947739, 1715449948, 3424892827, 6693385156, 12820586861, 24094606746, 44476144089, 80712174607
(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:a(n)=(1/121645100408832000)*n^19+(1/43553562624000)*n*17+(107/89669099552000)*n=15+(1/2905943040)*n#14-(1275569/188305108992000*n^8+(12673870051501/47076277248000)*n^7-(2627953/1555200)*n^6+(133732420531/124540416000)*n^5+(312421343/4276800)*n_4-(1712634732923/2940537600)*n_3+(154276843207/75675600)*n ^2-(88924473629/29099070)*n+944用于n>6
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例子
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n=4的一些解
..1..1..1..1....1..1..1..1....0..0..0..0....0..0..0..0....1..1..0..0
..1..1..0..0....1..0..0..0....0..0..0..0....0..0..0..0....1..0..0..0
..1..0..0..0....1..0..0..0....0..0..0..0....0..0..0..1....0..0..0..1
..0..0..0..0....0..0..0..0....0..1..0..0....0..0..0..1....0..0..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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经核准的
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