A221941 Number of 5Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns.

1, 2627, 376389, 84547866, 17626884659, 3719159201319, 782051177169672, 164583386567947853, 34629683921533060992, 7286522628060662000197

Offset: 1

Author

R. H. Hardin Feb 01 2013

Keywords

• nonn

Comments

Row 5 of A221937

Examples

			Some solutions for n=3
..0..2..0....0..1..0....0..2..0....0..3..0....0..2..1....0..3..1....0..2..1
..0..3..0....3..1..0....1..2..0....0..3..1....1..2..1....0..1..1....0..3..2
..0..4..2....1..3..2....0..4..2....1..0..0....0..0..1....0..2..1....0..0..2
..0..0..0....0..0..2....0..0..2....0..4..1....2..1..2....1..0..1....1..0..1
..1..2..1....1..1..0....1..1..0....0..1..1....1..1..0....2..0..2....1..0..2