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%I #4 Feb 14 2014 07:54:57
%S 6030,68830,811498,9902380,115821338,1360467556,16245005586,
%T 195628632968,2309260676524,27312310344552,325894030112650,
%U 3898536856894944,46199441511935170,548067141567809552,6532107606070688156
%N Number of (n+1)X(4+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 4 of A237868
%H R. H. Hardin, <a href="/A237864/b237864.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..2..2..2..2..1....0..0..1..1..0....0..0..1..2..0....0..0..1..1..1
%e ..1..2..2..1..0....1..1..1..1..1....2..2..2..1..2....1..0..1..0..0
%e ..0..1..0..1..0....1..0..0..1..1....1..0..0..0..1....0..2..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 14 2014
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