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A207240 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.

%I A207240 #7 Jul 22 2025 20:11:37
%S A207240 18,324,1526,7165,40838,197256,886959,4132837,18825154,83118767,
%T A207240 366894032,1612009910,7003691520,30295384994,130694823493,
%U A207240 561304207068,2402966839572,10265912202332,43759103277417,186155560434801
%N A207240 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.
%C A207240 Column 6 of A207242
%H A207240 R. H. Hardin, <a href="/A207240/b207240.txt">Table of n, a(n) for n = 1..210</a>
%e A207240 Some solutions for n=4
%e A207240 ..0..1..0..1..0..0....0..1..0..1..0..1....1..1..1..0..0..1....0..1..0..0..1..0
%e A207240 ..1..0..0..1..0..0....0..0..1..0..1..0....1..1..1..0..1..0....1..0..1..0..1..0
%e A207240 ..1..1..0..1..0..0....0..0..1..0..1..0....1..1..0..0..1..0....1..0..1..0..1..0
%e A207240 ..1..1..0..1..0..0....0..0..1..0..1..0....0..0..1..0..1..0....1..0..1..0..1..0
%K A207240 nonn
%O A207240 1,1
%A A207240 _R. H. Hardin_ Feb 16 2012