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%I #4 Feb 08 2014 10:43:24
%S 81,1724,62031,4882448,785179913,198237517632,88843850463838,
%T 85602787661410966
%N Number of (n+1)X(n+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 Diagonal of A237511
%e Some solutions for n=3
%e ..2..0..1..2....0..0..2..0....2..0..0..2....0..1..0..1....0..1..1..2
%e ..0..1..1..0....1..1..0..0....1..1..1..0....2..2..0..1....0..2..1..0
%e ..1..1..1..0....0..2..2..1....2..1..1..0....2..1..2..1....1..2..1..0
%e ..1..1..2..0....1..2..1..1....1..0..0..0....1..1..2..0....2..2..0..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 08 2014
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