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%I #3 Jan 09 2013 08:36:18
%S 0,0,0,100,0,0,0,46656,0,0,0,27836176,0,0,0,17029206016,0,0,0,
%T 10443393677376,0,0,0,6406089127650304,0,0,0,3929655953461248256,0
%N Number of 3Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two
%C Row 3 of A221275
%e Some solutions for n=4
%e ..0..2..2..0....0..2..0..0....0..2..2..0....0..2..2..0....2..0..2..0
%e ..0..2..0..0....0..2..2..2....0..2..2..0....0..2..2..2....0..2..2..0
%e ..2..0..2..2....2..0..2..0....2..0..0..2....2..0..0..0....0..2..0..2
%K nonn
%O 1,4
%A _R. H. Hardin_ Jan 09 2013