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%I #4 Feb 08 2014 10:45:30
%S 1342,9108,62031,462206,3489965,25188644,180995914,1323886040,
%T 9750862216,70896853212,515780878618,3760128852508,27527933916550,
%U 200444657289112,1462699965537270,10656195549646172,77892908821912858,567346977263750148
%N Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 3 of A237511
%H R. H. Hardin, <a href="/A237506/b237506.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..0..0..1..1....0..1..1..2....0..1..1..0....0..1..0..2....1..1..2..2
%e ..2..2..0..1....2..0..1..0....1..0..2..2....0..1..2..1....0..1..0..1
%e ..1..2..1..2....2..1..2..2....0..2..1..1....0..2..0..0....1..2..2..0
%e ..1..1..0..2....0..1..1..1....2..0..1..2....0..0..1..1....1..1..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 08 2014
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