A221239 Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops

0, 3913, 2217402, 1130617545, 543708183481, 258758829845879, 122696503196445552, 58120801668253857554

Offset

1,2

Comments

Column 5 of A221240

Links

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

Example

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

Crossrefs

Sequence in context: A022212 A131409 A209732 * A136459 A235315 A229642

Adjacent sequences: A221236 A221237 A221238 * A221240 A221241 A221242

Keyword

nonn

Author

R. H. Hardin Jan 06 2013

Status

approved