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%I #3 Jan 19 2013 20:50:06
%S 4,494,47976,4107189,354947070,30632388919,2643033185667,
%T 228021702640082,19671424819923462
%N Number of 4Xn arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out left turns
%C Row 4 of A221551
%e Some solutions for n=3
%e ..1..1..0....2..2..0....0..1..1....0..0..2....0..2..1....0..1..1....1..2..1
%e ..1..1..2....1..1..0....0..1..1....2..2..0....1..3..1....0..3..1....2..0..1
%e ..2..1..1....1..1..0....2..3..0....2..0..0....1..0..2....0..1..1....0..1..3
%e ..1..0..1....0..2..2....2..1..0....1..1..2....1..0..0....1..3..0....0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 19 2013
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