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%I #4 Feb 02 2014 06:49:27
%S 1238,9854,76212,635960,5259146,44597946,376887360,3222991866,
%T 27520095568,236568864708,2032537681056,17535842104346,
%U 151294565594066,1308890744507700,11327010592855074,98206225621215244,851830423648769622
%N Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal
%C Column 2 of A236979
%H R. H. Hardin, <a href="/A236974/b236974.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..3..2..3....0..3..2....1..2..0....0..1..0....2..3..1....3..3..3....2..3..1
%e ..2..0..2....0..2..0....3..2..1....0..3..0....1..2..1....3..0..3....0..3..0
%e ..3..2..3....0..3..0....2..3..2....0..1..0....2..3..2....1..3..3....0..3..0
%e ..1..0..0....1..2..0....3..3..2....3..0..3....3..3..3....0..3..0....3..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 02 2014
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