A189649 Number of n X 8 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.

34, 127385, 155610272, 248034953713, 376678790309002, 579697460209171993, 890636373071604964608, 1369385680210307625221600, 2105439181301591456075023034, 3237297479202888870044365473801

Offset

1,1

Comments

Column 8 of A189650.

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for 3 X 8
..0..2..3..4.11..5..6..7....0..2..3.10..5..4..6..7....0..2..3..4..5.14.13..7
..1..8.17.12.13.14.21.22....1..8.11.12.19.13.15.22....1..8.10.18.11..6.23.15
..9.16.18.10.19.20.15.23....9.16.17.18.20.21.23.14....9.16.17.20.19.12.21.22

Crossrefs

Cf. A189650.

Sequence in context: A335096 A243314 A358490 * A280901 A279376 A189311

Adjacent sequences: A189646 A189647 A189648 * A189650 A189651 A189652

Keyword

nonn

Author

R. H. Hardin, Apr 24 2011

Status

approved