A098344 Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n loops and arcs.

1, 2, 21, 378, 9819, 338978, 14802427, 790660090, 50405704473, 3763429394138, 324142520562853, 31809195929392082

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..11.

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

Crossrefs

Sequence in context: A241247 A177234 A099710 * A228384 A216281 A263625

Adjacent sequences: A098341 A098342 A098343 * A098345 A098346 A098347

Keyword

nonn

Author

N. J. A. Sloane, Oct 26 2004

Status

approved