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(来自的问候整数序列在线百科全书!)
A246899型 长度为7+4 0..n的数组的数量,每个连续五项中有一对数组,总计正好为n 1
1546, 140893, 2390116, 25710385, 139555230, 647845357, 2132283592, 6483573889, 16272395890, 38904095581, 82432596396, 168949326193, 318823302406, 587124413485, 1018357762960, 1733359959937, 2819557291482, 4517952689629 (列表;图表;参考文献;;历史;文本;内部格式)
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1,1
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第7行,共7行A246892型
链接
公式
经验:a(n)=2*a(n-1)+7*a(n-2)-16*a(n-3)-20*a(n-4)+56*a(n-5)+28*a(n-6)-112*a(n-7)-14*a(n-8)+140*a(n-9)-14*a(n-10)-112*a(n-11)+28*a(n-12)+56*a(n-13)-20*a(n-14)-16*a(n-15)+7*a(n-16)+2*a(n-17)-a(n-18)
例子
n=2的一些解
..1....0....0....0....0....0....1....0....1....0....1....2....0....1....0....2
..0....1....0....1....0....2....2....2....2....1....2....0....0....0....1....0
..2....0....2....2....1....2....1....0....1....2....0....0....2....1....1....0
..2....1....2....2....0....2....0....0....1....0....1....0....1....1....0....2
..2....1....0....1....2....0....2....2....1....1....1....2....0....2....1....0
..2....0....1....1....0....0....1....1....1....2....2....1....1....0....0....1
..0....2....2....2....0....2....2....1....0....0....2....2....0....0....1....1
..2....2....0....1....1....0....0....0....0....1....1....0....2....1....2....2
..1....2....1....2....2....0....1....1....1....0....1....0....0....0....1....1
..0....0....1....0....0....2....1....0....1....2....0....1....2....1....1....2
..0....0....1....0....2....1....1....2....0....0....2....1....1....2....1....2
交叉参考
关键字
非n
作者
R.H.哈丁2014年9月6日
状态
经核准的

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