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| 2009年2月 |
| 标有数字-2..2的n珠项链的数量不允许反转，总和为零，避免了图案zz+1 z+2和zz-1 z-2。 |
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1, 3, 5, 22, 63, 238, 865, 3417, 13607, 55669, 230581, 968550, 4108547, 17589348, 75872175, 329480644, 1439151627, 6318822750, 27872030921, 123452835089
(列表;图表;参考文献;听;历史;文本;内部格式)
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1,2
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评论
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链接
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例子
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n=6的一些解决方案：
.-2...-1...-2...-2...-2...-2...-2...-1...-2...-2...-2...-2...-2...-1...-2...-2
..2....0...-2...-1....0....0....1...-1....1....0....0....0....2....0....0....2
..2....0....2....2....2...-1...-1...-1...-1...-1....2...-2....0...-1....0...-2
.-1...-1....1....2....0....0....1....1...-1...-1....1....2...-1....1....0....2
.-1....0....2...-1....1....2....2....2....1....2...-1....0....1...-1....1...-1
..0....2...-1....0...-1....1...-1....0....2....2....0....2....0....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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