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A189609 Number of nX8 array permutations with each element not moving, or moving one space E, S or NW 1
1, 277, 11568, 671452, 36212912, 1968061359, 106717857552, 5778059258273, 312573095738121, 16898643737922425, 913264073225048477, 49345410349072594251, 2665888554266786412238, 144014204839657901069783 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 8 of A189610

LINKS

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

EXAMPLE

Some solutions for 3X8

..9..0..2.12..4..5..6..7....9..0..2.12.13.14..5..7....0..1.11.12..3..5.15..6

.17..1.19..3.11.22.13.15...17..1.10..3..4.22..6.15....8..9..2.10..4.13.14..7

..8.16.10.18.20.21.14.23....8.16.18.11.19.20.21.23...16.17.18.19.20.21.22.23

CROSSREFS

Sequence in context: A297891 A236803 A048525 * A264371 A154231 A252249

Adjacent sequences:  A189606 A189607 A189608 * A189610 A189611 A189612

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 24 2011

STATUS

approved

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Last modified January 28 12:46 EST 2022. Contains 350656 sequences. (Running on oeis4.)