A221190 Number of nX3 arrays of occupancy after each element moves to some king-move neighbor

2, 318, 12542, 577414, 25530633, 1136389329, 50496693142, 2244479038934, 99754529748792, 4433564852824255, 197047640578291149, 8757684228677158709, 389230724960761808734, 17299155383196445062953, 768851839790098893898403

Offset

1,1

Comments

Column 3 of A221192

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

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

Crossrefs

Sequence in context: A119779 A118579 A349272 * A367927 A192725 A089775

Adjacent sequences: A221187 A221188 A221189 * A221191 A221192 A221193

Keyword

nonn

Author

R. H. Hardin Jan 04 2013

Status

approved