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%I #5 Jan 04 2013 12:30:41
%S 0,1681,976,20277009,433687328,420771471561,29037336149952,
%T 10986555692499984
%N Number of 5Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2
%C Row 5 of A221200
%e Some solutions for n=3
%e ..2..2..0....0..2..0....0..2..1....1..2..1....0..2..1....0..2..0....0..2..0
%e ..1..2..0....1..2..1....1..2..0....1..2..0....0..2..0....2..2..0....2..2..1
%e ..0..2..1....0..2..0....1..2..0....0..2..1....1..2..1....1..2..1....1..2..0
%e ..0..2..0....0..2..1....0..2..0....0..2..1....1..2..0....0..2..1....0..2..0
%e ..0..2..1....2..2..0....1..2..1....0..2..0....0..2..1....0..2..0....1..2..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 04 2013