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%I #5 Mar 31 2012 12:36:01
%S 417256,454774672,39939558160,18492329456080,3063406967117776,
%T 1004331937875999952,225203116583181557968,65125066574894542587856,
%U 16551036919295881635106768,4596125898531178643947012816
%N Number of (n+1)X7 0..3 arrays with every 2X2 subblock singular
%C Column 6 of A184773
%H R. H. Hardin, <a href="/A184770/b184770.txt">Table of n, a(n) for n = 1..100</a>
%e Some solutions for 3X7
%e ..0..0..0..0..0..0..3....0..0..0..2..2..2..0....0..0..0..1..1..2..2
%e ..0..0..0..2..2..0..3....0..0..0..0..0..0..0....0..0..0..0..0..0..0
%e ..0..0..0..2..2..0..0....0..0..0..1..3..0..3....0..0..0..1..2..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 21 2011
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