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A208495 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically.

%I A208495 #9 Jul 22 2025 21:23:35
%S A208495 2,16,60,324,1794,12654,111328,1037300,13597800,200667632,3402101520,
%T A208495 81763293780,1957289927740,66305181080964,2590637896086730,
%U A208495 114679284980561840,7286860676676341916,454949245195033857996
%N A208495 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically.
%C A208495 Diagonal of A208501
%H A208495 R. H. Hardin, <a href="/A208495/b208495.txt">Table of n, a(n) for n = 1..32</a>
%e A208495 Some solutions for n=4
%e A208495 ..1..0..1..1....0..1..1..1....1..1..0..1....1..1..1..1....1..0..1..0
%e A208495 ..1..0..1..0....1..0..1..0....0..1..1..0....1..0..1..0....1..0..1..1
%e A208495 ..0..1..0..0....1..1..0..0....1..0..1..1....0..1..0..0....0..1..0..1
%e A208495 ..0..1..1..0....0..1..0..1....1..1..0..1....0..1..1..0....0..1..0..0
%K A208495 nonn
%O A208495 1,1
%A A208495 _R. H. Hardin_ Feb 27 2012