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A098345 Consider the family of multigraphs enriched by the species of binary arborescences. Sequence gives number of those multigraphs with n arcs. 0
1, 1, 10, 170, 4182, 137262, 5721356, 292803772, 17946811644, 1292298341980, 107643364177688, 10240855765623320 (list; graph; refs; listen; history; text; internal format)
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: A246501 A120977 A034830 * A119043 A187204 A133273

Adjacent sequences:  A098342 A098343 A098344 * A098346 A098347 A098348

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 26 2004

STATUS

approved

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Last modified August 22 20:23 EDT 2019. Contains 326182 sequences. (Running on oeis4.)