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%I #5 Jan 05 2014 12:38:24
%S 2400,75744,2691067,64470056,1538378437,27988093692,507441199620,
%T 7534804140934,111681101728373,1415861956568375,17929576294589042,
%U 199950651421904706,2227935030929519936,22325110214811735679
%N Number of (n+1)X(2+1) 0..3 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise
%C Column 2 of A235261
%H R. H. Hardin, <a href="/A235259/b235259.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..0..2..3....1..0..1....0..0..3....0..2..2....3..0..3....2..0..0....0..3..0
%e ..2..3..0....1..1..3....0..1..2....2..1..1....0..0..1....0..2..2....1..3..2
%e ..2..2..0....3..0..3....3..2..3....3..3..0....0..3..0....2..2..0....3..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 05 2014