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%I #4 Feb 08 2014 10:44:10
%S 81,328,1342,5622,23545,97700,406008,1690160,7044600,29290848,
%T 121938192,507239832,2112696916,8786861808,36590339088,152192510432,
%U 633818640688,2636209092480,10978287344480,45661928555744,190158818087504
%N Number of (n+1)X(1+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 Column 1 of A237511
%H R. H. Hardin, <a href="/A237504/b237504.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 208*a(n-4) +1448*a(n-6) +2500*a(n-8) +528*a(n-10) -624*a(n-12)
%e Some solutions for n=5
%e ..0..2....2..1....2..0....0..2....1..1....0..2....1..2....2..1....2..1....0..1
%e ..0..2....1..1....2..2....2..1....0..0....2..2....1..1....1..0....1..0....2..1
%e ..1..1....1..1....1..2....0..1....0..1....1..2....2..2....2..2....1..1....2..0
%e ..0..0....1..2....1..1....1..1....1..0....2..0....0..2....1..2....2..0....1..1
%e ..1..0....2..1....2..2....0..2....2..1....1..1....1..0....0..2....1..2....1..2
%e ..1..1....1..1....0..0....2..0....2..0....0..0....2..2....1..1....0..0....2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 08 2014
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