%I #6 Dec 18 2015 18:18:01
%S 2,16,82,530,4041,26980,268275,2555724,30415590,441509828,8373148373,
%T 212120269939,7313507695094,322966671937819,18599518847838594,
%U 1383707197762948671,137553485485585731530,16701189911469748208243
%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically
%C Diagonal of A207488
%e Some solutions for n=4
%e ..1..0..1..0....0..0..1..0....0..0..1..0....1..1..0..0....1..1..0..1
%e ..0..0..1..0....0..1..0..1....0..0..1..0....0..1..0..0....0..0..1..0
%e ..1..1..1..1....0..0..1..0....1..1..1..0....0..1..0..1....0..1..0..1
%e ..0..0..1..0....0..1..0..1....0..0..1..0....0..1..0..0....1..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 18 2012