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%I #4 Feb 23 2014 17:18:57
%S 1836,23854,315906,4268354,57285970,765288116,10243514512,
%T 137637981750,1846283781696,24725132097080,331342908417490,
%U 4445026705220610,59603288970762934,798804042986151504,10707950110350589226
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A238298
%H R. H. Hardin, <a href="/A238294/b238294.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..1..3..0....2..3..3....2..2..3....1..1..0....2..0..3....3..3..1....2..2..3
%e ..2..1..1....2..0..2....2..2..1....2..2..3....3..0..3....1..3..2....1..0..1
%e ..3..2..3....1..1..0....2..3..1....0..0..0....2..1..3....0..2..2....1..0..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 23 2014
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