A222554 Number of (n+7)X1 arrays of occupancy after each element moves up to +-7 places but not 0.

6427, 24230, 92011, 350967, 1342944, 5151294, 19797737, 76201719, 293634727, 1132449121, 4370239031, 16873077353

Offset: 1

Author

R. H. Hardin Feb 24 2013

Keywords

• nonn

Comments

Column 7 of A222555

Examples

			Some solutions for n=2
..1....1....0....2....0....2....2....0....1....2....0....3....1....1....0....0
..0....0....1....4....2....1....4....2....1....0....0....0....1....1....0....1
..2....5....0....0....0....1....2....1....4....3....1....1....0....0....0....0
..0....0....3....3....0....1....0....1....0....0....0....0....0....2....2....4
..1....0....1....0....0....1....1....1....0....0....0....3....2....1....1....0
..0....1....1....0....1....1....0....0....1....0....0....1....1....0....2....0
..1....2....0....0....4....0....0....1....1....4....6....0....0....3....0....2
..3....0....0....0....0....0....0....0....0....0....2....1....2....1....4....1
..1....0....3....0....2....2....0....3....1....0....0....0....2....0....0....1