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%I #7 Dec 18 2015 18:18:00
%S 2,16,82,611,5904,45520,467686,4556171,48655983,567847595,6351729691,
%T 80023297510,1005050679531,12834603243934,174354454607454,
%U 2353308940308585,32870079608035300,470039857440029540
%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically
%C Diagonal of A207269
%H R. H. Hardin, <a href="/A207263/b207263.txt">Table of n, a(n) for n = 1..23</a>
%e Some solutions for n=4
%e ..1..0..0..1....0..1..0..1....1..1..0..1....1..0..0..1....0..0..1..0
%e ..0..1..0..0....0..1..0..0....0..1..0..1....0..0..1..0....1..1..1..0
%e ..0..0..1..0....1..1..0..0....0..1..0..1....0..1..0..0....0..0..1..0
%e ..1..0..0..1....0..1..0..1....1..0..1..0....1..0..0..1....0..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 16 2012
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