A218909 Number of conjugacy classes of abelian subgroups of the symmetric group.

1, 1, 2, 3, 7, 9, 20, 26, 61, 82, 180, 236, 594, 762

Offset

0,3

Links

Table of n, a(n) for n=0..13.

Liam Naughton, CountingSubgroups.g

L. Naughton and G. Pfeiffer, Integer sequences realized by the subgroup pattern of the symmetric group, arXiv:1211.1911 and J. Int. Seq. 16 (2013) #13.5.8

Liam Naughton and Goetz Pfeiffer, Tomlib, The GAP table of marks library,

Prog

(GAP) List(ConjugacyClassesSubgroups(G), x->IsAbelian(Representative(x)));

Crossrefs

Sequence in context: A204520 A358392 A007649 * A225202 A046152 A057239

Adjacent sequences: A218906 A218907 A218908 * A218910 A218911 A218912

Keyword

nonn,more

Author

Liam Naughton, Nov 09 2012

Status

approved