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%I #3 Feb 01 2013 05:10:00
%S 1,1367,153652,20246283,2568601026,326363935235,41397744561659,
%T 5246761195398438,664828879659318271,84233175060135140710
%N Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns
%C Row 4 of A221929
%e Some solutions for n=3
%e ..1..1..2....1..0..1....0..2..1....1..0..2....0..1..1....1..1..2....0..0..2
%e ..0..0..1....1..1..1....0..1..2....2..0..1....0..1..1....0..0..1....0..6..0
%e ..0..3..2....0..1..1....1..1..1....0..1..0....0..2..1....1..1..4....1..1..0
%e ..0..2..0....1..3..1....0..1..2....1..2..2....2..2..1....0..1..0....0..1..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Feb 01 2013