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A196985号 |
| nX4 0..4阵列的数量,每个元素x等于其水平和垂直邻接的数量,x=0,1,2,3,4等于2,3,4,1,0 |
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1
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1, 5, 25, 113, 547, 2499, 11647, 54845, 256395, 1198317, 5607683, 26243839, 122783657, 574447047, 2687794239, 12575875245, 58839924859, 275301009225, 1288087194957, 6026735743519, 28198022800317, 131933577537561
(列表;图表;参考;听;历史;文本;内部格式)
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偏移
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1,2
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评论
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每个0紧挨着0 2,每个1紧挨着1 3,每个2紧挨着2 4,每个3紧挨着3 1,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)+6*a(n-2)+25*a(n-3)+33*a(-n-4)+a(n-5)-135*a
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例子
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n=5的一些解
..0..0..0..0....1..3..1..0....1..0..0..0....1..3..1..1....1..1..3..1
..0..0..0..0....0..1..0..0....3..1..0..1....0..1..1..3....3..1..1..1
..0..4..0..0....0..1..0..0....1..0..1..3....0..0..0..1....1..1..1..3
..0..0..1..0....0..3..1..0....0..0..1..1....0..1..3..1....1..3..0..1
..0..1..3..1....0..1..0..0....0..1..3..1....0..0..1..0....0..1..0..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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