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A197064号 |
| 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4,1,3,0,2,其中x=0,1,2,3,4 |
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1
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3, 11, 76, 408, 2026, 10582, 55882, 292564, 1530151, 8011519, 41953630, 219665320, 1150106497, 6021786417, 31529327887, 165083020845, 864350463984, 4525614428894, 23695466872796, 124066050968884, 649591959407978
(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0紧挨着0 4,每1紧挨着1 1,每2紧挨着2 3,每3紧挨着3 0,每4紧挨着4 2
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链接
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配方奶粉
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经验:对于n>13,a(n)=2*a(n-1)+8*a(n-2)+32*a
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例子
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n=4的一些解
..0..0..0....0..3..0....0..0..0....0..3..0....0..1..1....0..1..1....1..0..0
..1..1..0....1..0..0....0..0..0....3..0..3....0..0..0....0..3..0....1..0..3
..0..0..0....1..0..0....3..0..3....0..0..0....0..0..0....3..0..1....0..0..0
..1..1..0....0..1..1....0..3..0....1..1..0....0..0..0....0..0..1....0..3..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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