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%I #4 Jan 02 2013 19:46:20
%S 8,1681,200072,31203396,4235650596,619901126244,86907967843320,
%T 12474883501876324,1766575491615801750,252036106134604983844,
%U 35804312825751223799132,5098360123415675049888964
%N Number of nX5 arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2
%C Column 5 of A221139
%H R. H. Hardin, <a href="/A221136/b221136.txt">Table of n, a(n) for n = 1..13</a>
%e Some solutions for n=3
%e ..0..2..1..2..1....0..1..2..1..2....0..1..2..2..0....0..0..1..2..2
%e ..1..2..0..1..2....0..0..2..1..2....1..0..1..1..0....2..0..1..2..1
%e ..0..1..1..0..1....2..2..0..0..0....2..1..2..2..0....2..1..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 02 2013
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