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A207757 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 0 1 vertically.

%I A207757 #9 Jul 22 2025 20:47:37
%S A207757 2,16,82,663,6552,56651,887114,17141340,265932767,7838599272,
%T A207757 322656587622,9334787856534,545237703029106,50069011902134767,
%U A207757 2724265960028933880,333854434181630056441,70233064417444890074531
%N A207757 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 1 and 1 0 1 vertically.
%C A207757 Diagonal of A207762
%H A207757 R. H. Hardin, <a href="/A207757/b207757.txt">Table of n, a(n) for n = 1..18</a>
%e A207757 Some solutions for n=4
%e A207757 ..1..1..0..0....0..0..1..0....1..0..0..1....0..0..1..1....0..1..1..0
%e A207757 ..0..1..1..0....1..1..1..0....0..1..0..0....1..1..1..0....0..1..0..0
%e A207757 ..0..1..0..0....0..0..1..0....0..0..1..0....0..0..1..0....0..1..0..0
%e A207757 ..0..1..0..0....0..0..1..0....1..0..0..1....0..0..1..1....1..1..0..0
%K A207757 nonn
%O A207757 1,1
%A A207757 _R. H. Hardin_ Feb 19 2012