A217344 Number of nX6 arrays of occupancy after each element moves to some horizontal or vertical neighbor but without 2-loops

0, 918, 561573, 267947653, 119394609842, 52019083898820, 22467362744958042, 9668189828315322283

Offset

1,2

Comments

Column 6 of A217346

Links

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

Example

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

Crossrefs

Sequence in context: A029897 A221387 A217226 * A221113 A062335 A179673

Adjacent sequences: A217341 A217342 A217343 * A217345 A217346 A217347

Keyword

nonn

Author

R. H. Hardin Oct 01 2012

Status

approved