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%I #3 Jan 24 2013 08:10:07
%S 0,64,0,45956,381174,122732982,4330440582
%N Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns
%C Row 7 of A221755
%e Some solutions for n=4
%e ..0..2..1..1....1..1..0..2....0..2..0..2....1..1..1..1....0..2..1..2
%e ..1..1..1..1....0..2..1..1....2..0..2..0....0..2..1..1....1..0..1..1
%e ..0..2..2..0....2..0..1..1....0..2..0..2....2..0..0..2....1..1..1..1
%e ..2..0..1..1....1..1..2..0....2..0..2..0....1..1..2..0....1..1..2..0
%e ..1..1..1..1....0..2..2..1....1..1..0..2....1..1..0..2....1..1..0..2
%e ..0..2..1..1....1..0..0..1....1..1..2..0....0..2..2..0....1..1..2..0
%e ..2..0..1..1....1..2..2..0....1..1..1..1....2..0..1..1....1..1..1..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 24 2013