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%I #5 Mar 31 2012 12:36:00
%S 11826498,2393686398,484872198498,98159708768710,19873044281563890,
%T 4023477498134224486,814585573094687997378,164919489595820615871894,
%U 33389299480927975477593698,6759936480082800776073384278
%N Number of (n+2)X4 0..3 arrays with each 3X3 subblock nonsingular
%C Column 2 of A184652
%H R. H. Hardin, <a href="/A184651/b184651.txt">Table of n, a(n) for n = 1..31</a>
%e Some solutions for 6X4
%e ..0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..0
%e ..1..0..0..2....1..0..0..2....1..0..0..2....1..0..0..2....1..0..0..2
%e ..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0
%e ..1..0..1..0....0..0..1..0....1..0..1..0....0..0..1..0....3..0..1..0
%e ..2..0..1..1....1..3..1..2....0..2..2..3....1..3..1..1....2..0..2..2
%e ..1..1..2..1....2..0..3..3....1..1..0..0....1..1..3..3....0..3..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 19 2011
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