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%I #4 Feb 13 2014 06:30:50
%S 1764,20522,240288,2839146,33540636,396698708,4688253896,55379334708,
%T 654580668296,7741754622456,91493734872476,1080761905629874,
%U 12774590996582056,151085741499264052,1785565107362104448
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A237785
%H R. H. Hardin, <a href="/A237781/b237781.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..2..1..2....2..3..1....0..1..2....2..2..3....1..0..2....0..0..2....0..3..0
%e ..0..2..3....1..0..1....0..2..3....2..3..2....3..0..1....1..3..2....1..3..2
%e ..3..1..3....3..1..0....2..2..0....0..1..1....2..0..3....0..1..0....2..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 13 2014