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A257015型 |
| 没有3x3子块对角和等于反对角和的(n+2)X(2+2)0..2数组的数目 |
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1
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311364, 14776336, 717382656, 34828517376, 1679616000000, 81000000000000, 3914754624000000, 189201281063325696, 9137230462068166656, 441270693558373257216, 21316458288287242358784, 1029733903904001158025216
(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)=57*a(n-1)-1368*a(n-2)+53928*a(n3)-266760*a(4-4)-7303608*a(-n5)+214125120*a(6-6)-8896319424*a(7-7)+57672414720*a(8-8)+432546283008*a(-9)-7633921904640*a(-10)+2150542436304*a(-11)-1510880432947200*a(-12)-2386109465100288*a(n-13)+52716443900313600*a(-14)-1103770884016963584*a(-15)+800113020255969280*a(-16)-9600072345842614272*a(n-17)-23147623339744296960*a(n-18)+85799476901995986944*a(e-19)-6381793763148001443840*a)-5234360309688286033477632*a(n-26)+6979147079584381377970176(n-27)
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例子
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n=1的一些解
..0..2..2..0....0..1..1..0....0..0..1..2....0..1..2..2....0..1..1..1
..1..0..1..0....1..1..2..0....2..0..2..1....1..1..0..2....2..0..0..0
..1..1..1..2....0..2..2..2....0..0..0..1....2..2..2..0....2..2..0..1
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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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