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A184204 Number of (n+1)X7 binary arrays with no 2X2 subblock containing fewer than two 1s.

%I A184204 #7 Jul 22 2025 09:29:56
%S A184204 3268,158648,6468501,281420718,12021784217,516844071813,
%T A184204 22178227663588,952294826074262,40881902344878662,1755168245685353119,
%U A184204 75352500961047758574,3235038360513128954137,138886585051318322739473
%N A184204 Number of (n+1)X7 binary arrays with no 2X2 subblock containing fewer than two 1s.
%C A184204 Column 6 of A184207
%H A184204 R. H. Hardin, <a href="/A184204/b184204.txt">Table of n, a(n) for n = 1..200</a>
%e A184204 Some solutions for 3X7
%e A184204 ..0..1..1..1..1..0..0....0..1..1..1..0..0..1....1..0..1..1..0..0..1
%e A184204 ..1..1..1..0..1..1..1....1..1..0..0..1..1..0....1..1..1..0..1..1..0
%e A184204 ..0..0..1..0..1..0..0....0..0..1..1..1..1..0....1..1..1..1..1..1..1
%K A184204 nonn
%O A184204 1,1
%A A184204 _R. H. Hardin_ Jan 10 2011