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%I #4 Dec 25 2013 11:12:12
%S 10683130,1687142836,252617381130,37540308719262,5540782611170014,
%T 816701376137485043,120273769124195306186,17708686303582891399354,
%U 2607060592375039875597040,383797384931913109490872473
%N Number of (n+2)X(2+2) 0..3 arrays with no increasing sequence of length 3 horizontally or diagonally downwards
%C Column 2 of A234393
%H R. H. Hardin, <a href="/A234390/b234390.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=1
%e ..0..0..1..2....0..0..1..0....0..0..0..1....0..0..1..1....0..0..0..2
%e ..0..3..0..1....0..0..2..1....0..1..3..0....2..3..3..2....2..2..0..3
%e ..0..0..1..0....2..2..0..1....0..0..1..3....0..1..0..2....0..2..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 25 2013
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