A189454 Number of 6Xn array permutations with each element moving zero or one space horizontally or diagonally

1, 233, 10000, 883049, 63367633, 4982424404, 381987110556, 29628810704689, 2291898956153380, 177547968807911516, 13750881831250357785, 1065189200482251908097, 82511968595532627713640

Offset

1,2

Comments

Row 6 of A189449

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 6X3
..0..2..1....0..1..2....1..0..2....4..0..2....1..0..2....0..2..1....0..5..2
..3..5..4....3..4..5....7..8..5....3..5..1....4..3..5....3..8..5....4..3..1
..7..6..8....7..6..8....6..3..4....6.11..8....6..8..7....6..7..4....6..8..7
..9.10.11...10..9.11....9.11.10....9.10..7....9.10.11....9.14.11...13.14.11
.16.14.13...16.13.14...12.13.14...12.17.14...13.17.14...12.17.10...12..9.10
.15.12.17...15.12.17...16.15.17...15.16.13...15.12.16...16.15.13...15.16.17

Crossrefs

Sequence in context: A301956 A220567 A201035 * A201834 A201214 A232322

Adjacent sequences: A189451 A189452 A189453 * A189455 A189456 A189457

Keyword

nonn

Author

R. H. Hardin Apr 22 2011

Status

approved