A222553 Number of (n+6)X1 arrays of occupancy after each element moves up to +-6 places but not 0.

1709, 6372, 24024, 91052, 346091, 1318249, 5029086, 19207812, 73418105, 280780468, 1074200514, 4110562320, 15731749698, 60212701130, 230472089415

Offset: 1

Author

R. H. Hardin Feb 24 2013

Keywords

• nonn

Comments

Column 6 of A222555

Examples

			Some solutions for n=3
..2....1....3....1....1....1....1....0....1....1....0....0....1....0....1....1
..0....0....1....1....1....2....2....1....3....2....0....1....5....1....1....2
..0....2....2....2....0....4....0....0....0....0....0....0....1....0....3....0
..0....2....1....0....1....0....2....1....3....4....0....4....0....2....0....2
..0....0....1....0....0....0....0....1....0....0....1....3....1....1....0....0
..3....0....0....0....3....0....2....1....0....0....1....0....0....1....1....3
..0....3....1....1....2....1....0....0....1....0....0....0....0....3....1....1
..2....0....0....0....1....1....2....3....0....1....3....1....0....1....1....0
..2....1....0....4....0....0....0....2....1....1....4....0....1....0....1....0