A119569 Number of non-isomorphic Con-Cos groups of order n.

1, 1, 1, 2, 1, 2, 1, 5, 2, 2, 1, 3, 1, 2, 1, 5, 1, 4, 1, 3, 2, 2

Offset

1,4

Comments

A Con-Cos group is a group with a normal subgroup such that the cosets of this subgroup coincide with the conjugacy classes.

References

A. S. Muktibodh, "Con-Cos groups" Review Bull. of Calcutta Math. Soc., Vol. 11, 53-56, 2003

Links

Table of n, a(n) for n=1..22.

A. S. Muktibodh, Generalized Con-Cos groups, Advances in Algebra, Proc. of ICM satellite conf. Hong Kong, 2002, 434-441.

Crossrefs

Sequence in context: A224763 A128515 A332489 * A318475 A066083 A128644

Adjacent sequences: A119566 A119567 A119568 * A119570 A119571 A119572

Keyword

nonn,more

Author

A. S. Muktibodh (amukti2000(AT)yahoo.com), Jun 01 2006

Status

approved