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%I #4 Feb 17 2014 12:30:48
%S 256,14456,1781008,336372000,182752988334,220851136586828,
%T 747061315866664736,5370193055761518144212
%N Number of (n+1)X(n+1) 0..3 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Diagonal of A238081
%e Some solutions for n=2
%e ..2..3..2....3..2..0....3..0..2....2..2..0....1..1..1....0..3..3....1..2..3
%e ..1..3..2....1..0..1....2..1..2....0..2..3....3..2..1....2..1..3....2..3..3
%e ..0..1..1....1..2..3....3..1..1....1..3..1....0..3..3....2..3..0....3..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 17 2014
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