搜索： 编号：a237630
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237630元
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| （n+1）X（1+1）0..2个阵列的数目，其中每个2X2子块的上中值与其水平和垂直邻居正好相差一。 |
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81, 260, 702, 1786, 4621, 11936, 30656, 77576, 200452, 515424, 1325424, 3365664, 8687760, 22278912, 57336960, 145904256, 376379712, 963592704, 2481143040, 6321940992, 16301843712, 41692741632, 107387375616, 273842325504
(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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链接
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配方奶粉
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经验：当n>9时，a（n）=36*a（n-4）+48*a（n-6）。
经验公式：x*（81+260*x+702*x^2+1786*x^3+1705*x^4+2576*x|5+1496*x*6+800*x^7+400*x*8）/（1-36*x^4-48*x^6）-科林·巴克2018年10月23日
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例子
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n=5的一些解决方案：
..2..2....0..0....2..2....2..0....2..2....1..2....0..1....2..2....2..0....2..1
..0..1....1..0....1..1....1..2....0..1....2..0....0..0....1..2....1..2....0..0
..2..0....0..2....0..0....0..0....2..1....1..0....1..2....1..0....0..0....2..0
..0..2....2..1....1..0....1..0....1..2....0..0....0..2....0..0....0..2....0..1
..1..0....0..0....2..1....0..2....0..0....2..1....1..1....2..1....1..0....0..0
..0..0....0..2....2..1....1..2....0..1....2..2....2..2....1..2....2..2....1..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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