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%I #7 Mar 31 2012 12:36:02
%S 5,576,25496,1317540,64354744,3228500154,160107914496,7976049592892,
%T 396657534279472,19739291980979494,982052247478709716,
%U 48863217617236925408,2431151644944154928564,120961982929570366777114
%N 1/3 the number of nX5 0..2 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors
%C Column 5 of A185559
%H R. H. Hardin, <a href="/A185555/b185555.txt">Table of n, a(n) for n = 1..171</a>
%e Some solutions for 4X5 with a(1,1)=0
%e ..0..0..0..1..2....0..0..1..1..0....0..0..1..2..2....0..0..0..1..1
%e ..0..2..2..1..2....0..1..0..0..0....0..2..1..1..1....0..1..2..2..2
%e ..0..1..2..0..0....0..1..1..2..1....0..2..0..0..2....0..1..1..0..0
%e ..1..1..2..1..1....0..2..2..2..1....2..2..1..1..2....0..2..2..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 31 2011