搜索: 编号:a252118
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A252118号
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| 每3X3子块行、列、对角线和反对角线总和小于6的(n+2)X(1+2)0..3数组的数目 |
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+0 1
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41092, 1091710, 30699048, 845139814, 23117206344, 633958684608, 17408568411762, 477854088388692, 13112744813104416, 359859098814488430, 9876406203110032122, 271053452527870349598, 7438853002317194594032
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1,1
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例子
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n=1的一些解
..2..1..2....1..0..2....1..0..3....3..0..1....1..2..2....1..2..0....0..2..0
..3..0..2....1..0..3....1..0..0....2..1..0....2..0..2....3..0..2....0..0..0
..0..2..1....2..2..0....1..2..0....0..1..0....1..3..0....1..1..3....0..1..0
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非n
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