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A207117 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

%I A207117 #9 Jul 22 2025 20:02:35
%S A207117 2,16,102,1024,12288,175561,2330037,40119556,667127008,12622297801,
%T A207117 236060280854,5051251755001,104507364758952,2416776784204176,
%U A207117 54925343492859621,1369884877162739344,33478733130375924736
%N A207117 Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.
%C A207117 Diagonal of A207123
%H A207117 R. H. Hardin, <a href="/A207117/b207117.txt">Table of n, a(n) for n = 1..19</a>
%e A207117 Some solutions for n=4
%e A207117 ..1..0..0..0....1..1..1..1....1..0..1..1....0..1..1..0....0..0..0..0
%e A207117 ..1..1..0..0....1..1..1..1....1..1..0..1....1..1..0..0....0..1..1..0
%e A207117 ..1..0..0..0....1..1..1..1....0..0..0..0....0..1..1..0....0..0..0..0
%e A207117 ..1..1..0..0....1..1..1..0....0..0..0..0....0..0..0..0....0..0..0..0
%K A207117 nonn
%O A207117 1,1
%A A207117 _R. H. Hardin_ Feb 15 2012