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%I #5 Feb 11 2014 17:44:09
%S 81,310,1186,4700,18612,73176,287924,1136084,4482952,17653056,
%T 69546776,274191240,1081253560,4259811632,16788534672,66170693936,
%U 260880060656,1027965311952,4051919616000,15968658702496,62951672360256
%N Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 1 of A237703
%H R. H. Hardin, <a href="/A237696/b237696.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0....1..0....2..1....0..2....0..2....1..2....0..2....0..1....0..1....1..2
%e ..0..2....0..1....0..2....1..1....2..0....2..1....1..2....0..0....1..0....2..2
%e ..0..1....0..2....2..0....1..1....1..0....1..0....1..0....0..2....1..1....1..1
%e ..1..2....1..1....1..2....2..1....0..1....2..2....1..1....0..1....0..0....2..1
%e ..2..0....2..2....1..1....0..2....0..2....2..2....2..1....1..0....2..1....2..1
%e ..2..2....2..1....0..1....2..2....0..0....1..1....2..0....1..1....0..1....1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 11 2014
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