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A231381 Number of nX7 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

%I A231381 #6 Jul 23 2025 06:26:51
%S A231381 37,601,24747,830890,30936914,1157805351,42978519280,1597438228604,
%T A231381 59402875813957,2208383979206654,82098126041989007,
%U A231381 3052145959217113535,113469026790211137424,4218406116270705640956,156826531286247105951370
%N A231381 Number of nX7 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.
%C A231381 Column 7 of A231382
%H A231381 R. H. Hardin, <a href="/A231381/b231381.txt">Table of n, a(n) for n = 1..210</a>
%e A231381 Some solutions for n=3
%e A231381 ..0..1..1..1..0..0..0....1..1..0..0..0..1..1....1..0..0..1..1..0..0
%e A231381 ..0..1..0..0..0..1..0....1..0..0..0..0..1..1....1..0..0..1..0..0..0
%e A231381 ..0..0..0..1..1..1..0....0..0..1..1..1..1..1....0..0..1..1..0..0..1
%K A231381 nonn
%O A231381 1,1
%A A231381 _R. H. Hardin_, Nov 08 2013