A221349 Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops

0, 148, 12296, 938070, 68449305, 4937698670, 354502871047, 25405114529768, 1819259480725634, 130236648141077671, 9322142390162086274, 667229079763512284278, 47755622252421340025975

Offset

1,2

Comments

Column 4 of A221351

Links

Table of n, a(n) for n=1..13.

Example

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

Crossrefs

Sequence in context: A210159 A252770 A035822 * A178083 A128919 A223740

Adjacent sequences: A221346 A221347 A221348 * A221350 A221351 A221352

Keyword

nonn

Author

R. H. Hardin Jan 11 2013

Status

approved