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A208027 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically.

%I A208027 #7 Jul 22 2025 21:07:17
%S A208027 42,1764,14946,118179,917293,7184755,56728924,445530887,3494319540,
%T A208027 27469986456,215862782229,1695298344579,13318507574891,
%U A208027 104639074476398,822013471428905,6457620629731560,50731795567376622,398547965742628997
%N A208027 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 0 1 vertically.
%C A208027 Column 7 of A208028
%H A208027 R. H. Hardin, <a href="/A208027/b208027.txt">Table of n, a(n) for n = 1..210</a>
%e A208027 Some solutions for n=4
%e A208027 ..1..1..0..1..1..0..1....1..1..0..1..1..0..1....1..0..1..1..0..1..0
%e A208027 ..0..1..0..1..1..0..0....0..1..1..0..1..1..1....0..1..1..1..0..1..0
%e A208027 ..0..1..1..0..1..1..0....0..1..1..0..1..1..0....0..1..0..1..1..1..1
%e A208027 ..1..0..1..0..1..0..1....1..1..0..1..0..1..0....1..1..0..1..0..1..1
%K A208027 nonn
%O A208027 1,1
%A A208027 _R. H. Hardin_ Feb 22 2012