A222346 Number of (n+2) X 1 arrays of occupancy after each element moves up to +-n places including 0.

8, 33, 124, 460, 1714, 6433, 24308, 92376, 352714, 1352076

Offset

1,1

Comments

Row 2 of A222345.

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Cf. A222345.

Sequence in context: A301771 A070051 A087235 * A317017 A283544 A212404

Adjacent sequences: A222343 A222344 A222345 * A222347 A222348 A222349

Keyword

nonn

Author

R. H. Hardin Feb 16 2013

Status

approved