A099697 Consider the family of multigraphs enriched by the species of involutions. Sequence gives number of those multigraphs with n loops and edges.

1, 2, 11, 93, 1135, 18567, 387976, 9991794, 308837454, 11225560583, 472141867849

Offset: 0

Author

N. J. A. Sloane, Oct 26 2004

Keywords

• nonn

References

• G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.

Links

• G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission]