A099719 Consider the family of multigraphs enriched by the species of trees. Sequence gives number of those multigraphs with n arcs.

1, 1, 7, 89, 1720, 45887, 1595192, 69438623, 3675895762, 231400961167, 17017734251838, 1441193215057543

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..11.

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

Crossrefs

Sequence in context: A371386 A295543 A062747 * A142995 A350937 A200832

Adjacent sequences: A099716 A099717 A099718 * A099720 A099721 A099722

Keyword

nonn

Author

N. J. A. Sloane, Oct 26 2004

Status

approved