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%I #4 Feb 09 2014 06:42:05
%S 312,1668,8764,44668,224948,1181206,6170564,31538382,160690160,
%T 838194016,4355102280,22315658240,114413801424,594413227190,
%U 3078427346856,15808430494646,81314611678564,421380982769344,2178294253001920
%N Number of (n+1)X(2+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A237557
%H R. H. Hardin, <a href="/A237551/b237551.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 26*a(n-3) +473*a(n-4) +382*a(n-5) +716*a(n-6) +1304*a(n-7) -5953*a(n-8) -1004*a(n-9) -1124*a(n-10) -466*a(n-11) +9039*a(n-12) +792*a(n-13) -3360*a(n-14)
%e Some solutions for n=4
%e ..1..0..1....1..1..2....0..1..1....0..0..1....2..0..1....2..1..2....0..0..2
%e ..0..1..2....1..2..1....2..1..0....1..1..2....0..2..1....1..0..2....2..0..1
%e ..2..1..2....2..1..1....0..2..0....2..0..2....1..0..2....1..1..1....1..0..1
%e ..2..0..1....0..0..1....1..0..0....2..1..0....0..1..1....2..1..0....0..1..2
%e ..1..1..1....0..0..0....1..0..1....1..1..0....0..0..0....2..0..0....1..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 09 2014
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