A221607 Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns

16, 1378, 160999, 18561474, 2114436826, 240257613761, 27294219603383, 3100806305382481

Offset

1,1

Comments

Column 6 of A221609

Links

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

Example

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

Crossrefs

Sequence in context: A134375 A321583 A057994 * A351760 A330335 A160251

Adjacent sequences: A221604 A221605 A221606 * A221608 A221609 A221610

Keyword

nonn

Author

R. H. Hardin Jan 20 2013

Status

approved