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A203090 Number of (n+2)X9 binary arrays avoiding patterns 000 and 101 in rows and columns.

%I A203090 #7 Jul 22 2025 17:01:09
%S A203090 25384,169561,1110338,8108104,58260775,411159715,2942039652,
%T A203090 21001045294,149307714269,1063928895151,7580777433365,53974528946958,
%U A203090 384438447373736,2738313728520726,19501965156958738,138898967881687747
%N A203090 Number of (n+2)X9 binary arrays avoiding patterns 000 and 101 in rows and columns.
%C A203090 Column 7 of A203091
%H A203090 R. H. Hardin, <a href="/A203090/b203090.txt">Table of n, a(n) for n = 1..210</a>
%e A203090 Some solutions for n=1
%e A203090 ..0..0..1..1..1..1..1..1..1....1..1..0..0..1..1..1..0..0
%e A203090 ..0..1..1..1..0..0..1..1..1....0..1..1..1..1..1..1..1..0
%e A203090 ..1..1..1..1..0..0..1..1..1....0..1..0..0..1..1..0..0..1
%K A203090 nonn
%O A203090 1,1
%A A203090 _R. H. Hardin_ Dec 29 2011