A189509 Column 3 of triangle in A189507.

1, 6, 65, 701, 9324, 138016, 2325740, 43448940, 897020784, 20241273264

Offset: 2

Author

N. J. A. Sloane, Apr 23 2011

Keywords

• nonn
• more

Links

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

Crossrefs

Cf. A189507.

Extensions

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