A099693 Consider the family of multigraphs enriched by the species of directed sets. Sequence gives number of those multigraphs with n loops and edges.

1, 2, 11, 89, 1063, 17099, 352700, 8987170, 275303298, 9930027149, 414883314611

Offset

0,2

References

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

Links

Table of n, a(n) for n=0..10.

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

Crossrefs

Sequence in context: A099662 A307770 A355425 * A197794 A197914 A371537

Adjacent sequences: A099690 A099691 A099692 * A099694 A099695 A099696

Keyword

nonn

Author

N. J. A. Sloane, Oct 26 2004

Status

approved