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%I #4 Jan 12 2014 06:17:09
%S 23024,2481481,269127070,24006644081,1779283912244,111365596706324,
%T 6085624918209802,295666879948724250,13027131423053574349,
%U 526620669534920057107,19765434730013023379418,694125830476673627265551
%N Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise
%C Column 3 of A235559
%H R. H. Hardin, <a href="/A235558/b235558.txt">Table of n, a(n) for n = 1..38</a>
%e Some solutions for n=1
%e ..0..1..2..1....2..3..3..2....0..3..1..0....3..3..2..3....3..0..0..2
%e ..1..1..2..1....0..2..1..3....3..0..2..0....3..2..1..0....1..2..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 12 2014
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