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%I A221307 #3 Jan 09 2013 16:37:22
%S A221307 0,90,0,38146,0,19642342,0,9842336697,0,4907450696408,0,
%T A221307 2441328266555768,0,1213489893520857350,0,602992641919618581949,0,
%U A221307 299597420150822374508346,0,148848899893861061853934856,0
%N A221307 Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two
%C A221307 Column 5 of A221308
%e A221307 Some solutions for n=4
%e A221307 ..0..0..0..2..2....0..2..0..0..0....0..0..2..0..0....2..2..0..2..0
%e A221307 ..2..2..0..0..0....0..2..0..2..0....2..2..2..2..0....0..0..0..2..2
%e A221307 ..0..0..2..2..0....2..2..2..2..0....0..0..0..2..2....0..0..0..0..2
%e A221307 ..2..2..2..2..0....0..2..0..2..2....0..2..2..0..2....2..2..2..2..0
%K A221307 nonn
%O A221307 1,2
%A A221307 _R. H. Hardin_ Jan 09 2013

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