A221163 Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor

8, 352, 14704, 609961, 25266305, 1046229704, 43318295565, 1793512771275, 74256503785519, 3074423327838949, 127289505511741394, 5270131676800319948, 218197773791764622997, 9033980715508142596386, 374031347287341441297064

Offset

1,1

Comments

Column 3 of A221165

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

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

Crossrefs

Sequence in context: A193504 A158363 A221044 * A000436 A015507 A167256

Adjacent sequences: A221160 A221161 A221162 * A221164 A221165 A221166

Keyword

nonn

Author

R. H. Hardin Jan 03 2013

Status

approved