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%I #3 Jan 22 2013 19:16:26
%S 1,2989,429160,81980587,14223656107,2507976517152,439747190895603,
%T 77182226468656287,13541666058334423392,2376046290419395692015,
%U 416894941050089368969405
%N Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor
%C Row 4 of A221723
%e Some solutions for n=3
%e ..0..0..1....0..0..1....0..0..2....0..1..0....0..0..2....0..1..1....0..0..2
%e ..0..2..3....0..4..1....2..2..0....0..4..1....1..3..3....1..0..3....3..2..1
%e ..2..3..0....0..3..0....2..2..0....0..0..2....0..0..1....0..0..1....0..0..0
%e ..0..0..1....1..2..0....1..0..1....0..2..2....1..1..0....1..3..1....0..4..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 22 2013
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