A221608 Number of nX7 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns

32, 7057, 2286878, 730077217, 229719706276, 72063803799931, 22596355738886108, 7085160611803323231, 2221576402652735693008

Offset

1,1

Comments

Column 7 of A221609

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A209542 A028461 A240446 * A283922 A224100 A224107

Adjacent sequences: A221605 A221606 A221607 * A221609 A221610 A221611

Keyword

nonn

Author

R. H. Hardin Jan 20 2013

Status

approved