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%I #6 Mar 31 2012 12:36:00
%S 106449,3745509,127914873,4349714604,148865535558,5086456344189,
%T 173770575972936,5938271620589823,202911936134261004,
%U 6933513869040543390,236921565938349758076,8095693393330933416858,276632675670908357073564
%N Number of (n+2)X3 0..3 arrays with each 3X3 subblock having a positive determinant
%C Column 1 of A184649
%H R. H. Hardin, <a href="/A184646/b184646.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for 4X3
%e ..0..0..2....0..0..2....0..0..2....0..0..1....0..0..2....0..0..1....0..0..2
%e ..2..1..1....2..1..1....2..1..1....2..0..0....2..1..1....2..1..1....1..0..1
%e ..3..3..3....2..3..0....0..3..1....0..3..0....1..3..3....3..2..3....2..1..0
%e ..1..0..3....1..3..3....0..1..1....3..1..2....2..1..2....2..0..3....3..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 18 2011
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