搜索: 编号:a251650
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A251650型
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| 任何3X3子块中没有行、列、对角线或反对角线的(n+2)X(6+2)0..3数组的数目总和为0 2 4 5 7或9 |
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+0 1
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4140, 22904, 74194, 245842, 1563586, 5167050, 17185778, 108553714, 360921738, 1210167730, 7559111602, 25300264746, 85512861490, 527702965490, 1778470746634, 6061036003186, 36927181355506, 125357503584554
(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:对于n>15,a(n)=6*a(n-1)-3*a(n-2)+44*a(n3)-390*a(4-4)+222*a(-n5)+1617*a(6-6)-1224*a(7-7)-1223*a(8-8)+1020*a(m-9)-68*a(-11)
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例子
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n=3的一些解
..0..0..3..0..3..3..0..0....2..3..1..2..0..1..2..3....3..2..1..3..2..1..3..2
..2..2..2..2..2..2..2..2....3..1..2..3..1..2..3..1....2..1..0..2..1..0..2..1
..1..1..1..1..1..1..1..1....1..2..3..1..2..0..1..2....1..3..2..1..3..2..1..3
..3..0..3..3..0..3..0..3....2..0..1..2..3..1..2..0....0..2..1..3..2..1..3..2
..2..2..2..2..2..2..2..2....3..1..2..0..1..2..0..1....2..1..0..2..1..0..2..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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