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A188810 Number of nX2 array permutations with each element moved but remaining in its original row or its original column 0
1, 4, 20, 272, 6032, 205312, 9672448, 601903360, 47722897664, 4692633242624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A188813

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for 3X2

..2..5....4..5....4..3....1..0....4..5....2..5....2..0....4..3....1..0....1..0

..3..1....0..1....0..2....4..5....3..2....4..1....3..1....0..5....3..2....4..2

..0..4....2..3....5..1....2..3....0..1....0..3....5..4....2..1....5..4....5..3

CROSSREFS

Sequence in context: A034235 A222655 A000847 * A120443 A053400 A120599

Adjacent sequences:  A188807 A188808 A188809 * A188811 A188812 A188813

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 11 2011

STATUS

approved

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Last modified December 13 17:17 EST 2019. Contains 329970 sequences. (Running on oeis4.)