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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:1104.3353 [cs.DM], 2011-2012.
CROSSREFS
Cf. A189507.
Sequence in context: A297516 A389002 A099343 * A397568 A360977 A376087
Adjacent sequences: A189506 A189507 A189508 * A189510 A189511 A189512
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Apr 23 2011
EXTENSIONS
Missing term for n=9 added by Anthony Labarre, Feb 14 2013
STATUS
approved

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Last modified August 27 00:58 EDT 2026. Contains 398718 sequences.
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