A222344 Number of (n+7)X1 arrays of occupancy after each element moves up to +-7 places including 0

6435, 24308, 92340, 352296, 1348536, 5175000, 19896840, 76608720, 295281045, 1139034799, 4396352766, 16975972331

Offset

1,1

Comments

Column 7 of A222345

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=3
..3....1....1....3....4....1....1....0....0....1....6....2....1....0....4....0
..0....0....2....1....2....1....0....3....0....2....0....0....4....0....3....2
..3....0....2....4....0....0....0....2....0....2....0....1....0....3....0....0
..1....2....1....0....0....1....0....1....0....2....0....0....1....0....2....0
..0....2....2....0....3....1....0....1....1....0....1....2....2....3....0....5
..1....2....1....0....0....1....0....0....4....0....0....2....0....0....1....0
..2....3....0....1....0....1....9....3....2....0....1....0....0....1....0....2
..0....0....0....0....0....0....0....0....0....0....1....1....2....0....0....0
..0....0....1....1....1....0....0....0....1....3....0....1....0....0....0....1
..0....0....0....0....0....4....0....0....2....0....1....1....0....3....0....0

Crossrefs

Sequence in context: A104374 A222554 A104318 * A194720 A140916 A208621

Adjacent sequences: A222341 A222342 A222343 * A222345 A222346 A222347

Keyword

nonn

Author

R. H. Hardin Feb 16 2013

Status

approved