%I #3 Jan 20 2013 20:01:14
%S 0,64,42810,41480899,33145684280,27294219603383,22596355738886108,
%T 18795109923272155626
%N Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns
%C Row 7 of A221609
%e Some solutions for n=3
%e ..0..2..1....1..1..0....1..1..0....1..1..0....0..2..1....1..1..0....0..2..1
%e ..0..2..0....1..3..0....1..3..0....1..3..0....1..1..0....1..2..0....0..2..0
%e ..2..2..0....0..2..0....0..3..1....0..2..2....0..3..0....1..3..0....1..2..0
%e ..0..3..1....2..2..0....0..2..1....0..2..1....2..2..0....0..2..2....1..2..0
%e ..0..1..0....1..2..0....0..1..2....0..2..1....0..2..1....0..2..1....2..1..0
%e ..1..2..0....0..1..1....0..3..0....0..3..0....1..2..0....0..3..0....1..2..0
%e ..2..2..0....1..3..0....1..1..0....0..1..1....1..2..0....1..1..0....1..3..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 20 2013
|