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%I #7 Dec 18 2015 18:18:01
%S 2,16,114,2205,97580,10150118,2433018665,1332236625328,
%T 1658417176295910,4680320299339768945,29900757895299392674248,
%U 432064042048194196301219286,14114419978195735103237247653751,1042092211595049585701702108677740928
%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically
%C Diagonal of A207717
%H R. H. Hardin, <a href="/A207711/b207711.txt">Table of n, a(n) for n = 1..20</a>
%e Some solutions for n=4
%e ..1..0..1..0....1..0..1..0....1..0..1..0....0..1..1..0....0..1..0..1
%e ..1..1..0..1....1..0..1..0....0..1..0..0....1..1..0..0....1..1..1..0
%e ..0..1..1..1....1..0..1..0....1..1..1..0....1..1..1..0....0..1..0..1
%e ..1..1..1..1....1..0..1..0....0..1..1..0....0..1..1..0....1..0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 19 2012
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