编辑
经核准的
R.H.Hardin,<a href=“/A222373型/b222373.txt“>n表,n=1..210时为a(n)</a>
分配给R.H.Hardin
不超过floor(nX2/2)的元素不等于至少一个水平或垂直相邻元素的nX2 0..3数组的数量,新值以行主要值0..3的顺序引入
1, 1, 5, 18, 63, 234, 1163, 4953, 24021, 109395, 536457, 2526558, 12324313, 59135699, 288057673, 1396084937, 6800380165, 33152287976, 161670473265, 790996243845, 3863624579433, 18948369852560, 92716137764021, 455475835479225
1,3
第2列,共列A222378号
n=4的一些解
..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..1....0..1
..0..1....0..0....0..0....1..0....0..0....0..0....0..0....0..0....1..1....2..2
..0..0....0..0....1..0....1..1....0..1....0..0....0..0....0..1....1..1....2..2
..0..0....0..0....1..1....1..1....0..0....1..1....0..1....1..1....1..1....2..2
分配
非n
R.H.哈丁2013年2月17日