The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #5 Jan 04 2013 12:32:18
%S 16,6400,2518569,1026177156,420771471561,172850051090025,
%T 71030642332905025
%N Number of nX6 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2
%C Column 6 of A221200
%e Some solutions for n=3
%e ..0..1..2..1..2..0....0..1..1..1..1..0....0..1..2..2..2..2....0..1..1..1..2..0
%e ..0..2..2..1..0..1....0..2..2..1..2..1....0..1..1..1..1..0....0..1..1..2..2..1
%e ..0..2..1..0..2..1....0..1..1..2..2..0....0..1..2..1..1..0....0..2..1..0..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 04 2013