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%I #4 Jan 16 2014 08:19:43
%S 2581,86509,2919508,84434218,2090202044,44724089619,849474770590,
%T 14522792725086,227945075932922,3310579596663058,45097735688257706,
%U 578891366979555783,7068001519607692033,82341095995180796862
%N Number of (n+1)X(3+1) 0..2 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 A235842
%H R. H. Hardin, <a href="/A235840/b235840.txt">Table of n, a(n) for n = 1..177</a>
%e Some solutions for n=2
%e ..0..2..2..2....2..0..2..1....0..2..2..0....0..2..2..0....1..0..1..0
%e ..2..2..0..0....0..1..0..0....1..2..2..0....2..1..2..0....0..1..0..1
%e ..0..1..1..0....0..0..0..2....0..0..1..2....1..0..1..1....0..1..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 16 2014
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