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A189509 Column 3 of triangle in A189507. 1
1, 6, 65, 701, 9324, 138016, 2325740, 43448940, 897020784, 20241273264 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..11.

Simona Grusea and Anthony Labarre, The distribution of cycles in breakpoint graphs of signed permutations, arXiv:1104.3353v1

CROSSREFS

Cf. A189507.

Sequence in context: A179879 A297516 A099343 * A243698 A217899 A006959

Adjacent sequences:  A189506 A189507 A189508 * A189510 A189511 A189512

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Apr 23 2011

EXTENSIONS

Added missing term for n=9, Anthony Labarre, Feb 14 2013

STATUS

approved

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Last modified July 24 04:08 EDT 2019. Contains 325290 sequences. (Running on oeis4.)