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A189432 Number of nX6 array permutations with each element not moving, or moving one space N, SW or SE 1
1, 13, 181, 2413, 40065, 606201, 9557077, 150278792, 2367212857, 37358187521, 589449930573, 9305507958493, 146913309982185, 2319624020512093, 36626205645266813, 578327113990185529, 9131891816444663056 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A189435

LINKS

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

EXAMPLE

Some solutions for 3X6

..6..1..2..9.10..5....6..7..2..3.10.11....6..7..8..3..4..5....0..7..8..9.10.11

.12..0..8..4..3.11....1..0..8..9..5..4....1..0.14..2.10.11....1.13..3..2..5..4

..7.13.14.15.16.17...12.13.14.15.16.17...12.13..9.15.16.17...12..6.14.15.16.17

CROSSREFS

Sequence in context: A142646 A201607 A083576 * A122571 A001570 A239902

Adjacent sequences:  A189429 A189430 A189431 * A189433 A189434 A189435

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 22 2011

STATUS

approved

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Last modified November 21 21:29 EST 2014. Contains 249791 sequences.