A099684 Consider the family of multigraphs enriched by the species of quaternary sets. Sequence gives number of those multigraphs with 4n edges.

1, 1, 71, 52966, 188004311, 2072901801106

Offset

0,3

References

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

Links

Table of n, a(n) for n=0..5.

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

Crossrefs

Sequence in context: A243665 A243686 A131454 * A078915 A144242 A144360

Adjacent sequences: A099681 A099682 A099683 * A099685 A099686 A099687

Keyword

nonn

Author

N. J. A. Sloane, Oct 26 2004

Status

approved