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A207558 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.

%I A207558 #9 Jul 22 2025 20:34:57
%S A207558 2,16,92,636,9568,138017,3275898,100565794,5427850334,274972547840,
%T A207558 35540211201327,3458816367555240,1051654956960360726,
%U A207558 183797069898348851705,149794018569432287405504
%N A207558 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.
%C A207558 Diagonal of A207564
%H A207558 R. H. Hardin, <a href="/A207558/b207558.txt">Table of n, a(n) for n = 1..16</a>
%e A207558 Some solutions for n=4
%e A207558 ..0..0..0..0....1..0..1..1....1..1..0..1....1..0..0..0....1..1..0..1
%e A207558 ..1..0..1..1....1..1..1..1....1..1..0..1....0..1..1..0....0..0..0..0
%e A207558 ..0..0..0..0....1..0..1..1....1..1..1..1....1..0..0..0....0..1..1..1
%e A207558 ..0..1..1..0....1..1..1..1....1..1..0..1....0..0..0..0....1..0..0..0
%K A207558 nonn
%O A207558 1,1
%A A207558 _R. H. Hardin_ Feb 18 2012