A221827 Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.

0, 333, 40983, 4715043, 570066685, 68489860450, 8224749361083, 987885812260577, 118641972922938733, 14248324215718943851, 1711142647446159966808

Offset: 1

Author

R. H. Hardin Jan 26 2013

Keywords

• nonn

Comments

Column 5 of A221828

Examples

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