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A185832 Half the number of nX6 binary arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.

%I A185832 #9 Jul 22 2025 10:03:11
%S A185832 5,162,1430,11789,98975,923808,7678409,68363184,593948668,5187350050,
%T A185832 45205777641,395015488029,3443605978936,30060887575003,
%U A185832 262260968830996,2288567378102476,19968587237909055,174246131512755338
%N A185832 Half the number of nX6 binary arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
%C A185832 Column 6 of A185835
%H A185832 R. H. Hardin, <a href="/A185832/b185832.txt">Table of n, a(n) for n = 1..200</a>
%e A185832 Some solutions for 4X6 with a(1,1)=0
%e A185832 ..0..1..1..1..1..1....0..0..1..1..1..0....0..0..0..1..1..0....0..0..0..1..1..1
%e A185832 ..0..0..0..0..0..1....0..1..0..0..1..0....0..1..1..1..0..0....0..1..1..0..0..0
%e A185832 ..1..1..1..1..1..1....0..1..0..0..1..0....0..1..0..0..1..1....1..0..1..0..1..0
%e A185832 ..0..0..0..0..0..0....0..0..1..1..0..0....0..1..1..0..0..1....1..0..1..0..1..0
%K A185832 nonn
%O A185832 1,1
%A A185832 _R. H. Hardin_ Feb 05 2011