A222348 Number of (n+4)X1 arrays of occupancy after each element moves up to +-n places including 0

55, 352, 1560, 6225, 24038, 92036, 352296, 1351572

Offset

1,1

Comments

Row 4 of A222345

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A250834 A020280 A063653 * A075740 A340240 A355511

Adjacent sequences: A222345 A222346 A222347 * A222349 A222350 A222351

Keyword

nonn

Author

R. H. Hardin Feb 16 2013

Status

approved