A221399 Number of nX5 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2

0, 324, 26374, 2294372, 197166544, 16996641648, 1467880996172, 126930182790936, 10983593507924760, 950783861987061762, 82317652792534321058, 7127444249953921537462

Offset

1,2

Comments

Column 5 of A221400

Links

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

Example

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

Crossrefs

Sequence in context: A183358 A128381 A128992 * A204082 A088216 A121001

Adjacent sequences: A221396 A221397 A221398 * A221400 A221401 A221402

Keyword

nonn

Author

R. H. Hardin Jan 15 2013

Status

approved