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A207660 Number of nX7 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 0 vertically.

%I A207660 #7 Jul 22 2025 20:38:47
%S A207660 42,1764,8928,47320,284272,1806676,12327618,87753008,651328292,
%T A207660 4960764186,38639433738,305186378918,2437962689512,19615699465126,
%U A207660 158722646817678,1289041298468286,10498617133779346,85668476633718976
%N A207660 Number of nX7 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
%C A207660 Column 7 of A207661
%H A207660 R. H. Hardin, <a href="/A207660/b207660.txt">Table of n, a(n) for n = 1..210</a>
%e A207660 Some solutions for n=4
%e A207660 ..0..0..1..0..1..1..0....1..1..0..0..1..1..0....0..1..0..0..1..1..0
%e A207660 ..0..0..1..0..1..1..0....1..1..0..1..1..0..1....0..0..1..1..0..1..1
%e A207660 ..0..0..1..0..0..1..0....1..1..0..0..1..1..0....0..1..1..0..1..1..0
%e A207660 ..0..0..1..0..1..1..0....1..1..0..1..0..0..1....0..1..0..1..1..0..1
%K A207660 nonn
%O A207660 1,1
%A A207660 _R. H. Hardin_ Feb 19 2012