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%I #4 Nov 30 2014 07:25:37
%S 22500,1494029,86208566,3816838692,152303295344,5387348466660,
%T 177938935415798,5502772243799727,162662498113307643,
%U 4619253532805480216,127251482033929987476,3414828003845101346775,89735028379445977912644
%N Number of (n+1)X(3+1) 0..3 arrays with nondecreasing maximum of every two consecutive values in every row and column
%C Column 3 of A251120
%H R. H. Hardin, <a href="/A251116/b251116.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=1
%e ..1..3..2..3....1..2..3..3....3..2..3..1....1..1..2..3....3..2..3..3
%e ..0..1..1..3....1..0..3..0....3..0..3..2....2..2..2..1....1..1..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 30 2014