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%I #3 Jan 27 2013 11:44:25
%S 13,3437,465305,67228149,9607602488,1374453486067,196583533871825,
%T 28117377558933453
%N Number of nX4 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction
%C Column 4 of A221852
%e Some solutions for n=3
%e ..0..2..1..0....0..2..0..0....0..1..1..0....0..3..0..2....0..4..0..2
%e ..0..0..3..0....0..1..7..0....1..0..1..4....0..1..0..2....0..0..1..0
%e ..1..3..2..0....1..0..1..0....0..3..0..1....0..1..1..2....0..3..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 27 2013
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