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%I #4 Jan 10 2015 19:31:02
%S 3550,83884,2240030,57696638,1480378584,37974926408,973419692344,
%T 24954361428316,639722018395542,16399618381462986,420413253006099542,
%U 10777534399917205716,276288152540512284466,7082802871534880299076
%N Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally and vertically
%C Column 3 of A253731
%H R. H. Hardin, <a href="/A253727/b253727.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..1..1..2..0....2..0..2..2....0..0..0..1....2..2..0..0....0..0..1..1
%e ..0..1..0..1....1..1..1..2....0..1..0..2....2..0..2..0....1..1..2..0
%e ..2..0..1..0....2..1..1..0....1..0..1..1....1..1..0..1....1..2..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 10 2015