A251422-OEIS公司

A251422型

长度为n+20..2的数组的数目，其最大值减去两倍中值加上相邻三元组的最小值，再乘以等于零的+-1排列

9, 41, 97, 341, 1003, 3129, 9439, 28717, 86695, 261789, 788373, 2372693, 7133179, 21434717, 64377579, 193296317, 580236633, 1741470477, 5226041293, 15681654949, 47052540983, 141173946441, 423556852705, 1270745764685, 3812398439683

(列表;图表;参考文献;听;历史;文本;内部格式)

抵消

1,1

第2列，共列A251428型

链接

R.H.哈丁，n=1时的n，a（n）表。.210

配方奶粉

经验公式：a（n）=8*a（n-1）-21*a（n-2）+12*a（n3）+36*a（-n4）-66*a

例子

n=9的一些解

..1....2....1....1....2....0....0....0....1....2....1....1....2....0....2....0

..0....2....1....1....0....1....0....2....0....1....1....2....2....1....1....1

..0....0....2....0....2....0....2....0....0....1....1....2....0....0....1....2

..1....0....1....2....0....2....1....1....2....1....2....1....1....0....1....0

..2....0....1....1....1....0....2....2....0....2....1....1....1....2....1....1

..2....1....0....0....2....1....1....2....0....1....1....1....2....2....0....2

..2....1....2....1....1....1....2....2....0....2....2....2....1....0....1....0

..1....2....2....2....1....0....1....2....2....0....1....0....1....1....0....1

..1....1....2....0....0....0....1....1....1....2....0....0....1....2....1....1

..1....2....2....0....1....2....1....1....1....0....0....0....0....1....2....0

..2....1....2....2....2....2....2....0....1....2....0....2....1....2....2....2

交叉参考

上下文中的序列：A000437号 A095809号 A273359型*A018836号 A373522型 A245932型

相邻序列：A251419型 A251420型 A251421型*A251423型 A251424型 A251425型

关键词

非n

作者

R.H.哈丁2014年12月2日

状态

经核准的