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%I #7 Dec 18 2015 18:18:00
%S 2,16,102,720,6398,54684,468348,4356936,41716708,403445900,4037337213,
%T 41571957024,435311467198,4653843868560,50835606848268,
%U 564791240516000,6378296516533122,73247208566761530,853936849893078000
%N Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically
%C Diagonal of A207068
%H R. H. Hardin, <a href="/A207062/b207062.txt">Table of n, a(n) for n = 1..26</a>
%e Some solutions for n=4
%e ..0..0..0..0....1..0..0..0....1..1..0..1....1..1..0..0....0..1..1..0
%e ..1..1..0..1....1..1..0..0....0..0..0..0....1..0..0..0....0..1..1..1
%e ..1..0..0..0....1..0..0..0....0..0..0..0....0..0..0..0....0..1..1..1
%e ..0..0..0..0....1..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 14 2012
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