|
%I #5 Mar 31 2012 12:37:14
%S 1121,1256641,555815721,303753655993,159875651653873,
%T 84153991018875649,44164224032234465777,23199181514556014200473,
%U 12192821954330775340942049,6408564367559028803363645001,3368028976953893638418482360481
%N Number of nX7 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column
%C Column 7 of A207015
%H R. H. Hardin, <a href="/A207014/b207014.txt">Table of n, a(n) for n = 1..78</a>
%e Some solutions for n=4
%e ..0..1..1..2..2..2..0....1..1..0..2..1..0..2....0..0..2..0..0..2..1
%e ..1..2..0..1..1..2..2....2..2..1..1..1..1..0....2..1..1..1..1..2..0
%e ..1..2..2..0..0..2..1....0..0..1..1..1..1..0....1..2..0..1..1..1..2
%e ..0..0..0..0..2..2..1....2..1..0..2..1..1..0....0..2..2..2..2..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 14 2012
| 