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A099719 Consider the family of multigraphs enriched by the species of trees. Sequence gives number of those multigraphs with n arcs. 0
1, 1, 7, 89, 1720, 45887, 1595192, 69438623, 3675895762, 231400961167, 17017734251838, 1441193215057543 (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.

CROSSREFS

Sequence in context: A069661 A069662 A062747 * A142995 A200832 A103064

Adjacent sequences:  A099716 A099717 A099718 * A099720 A099721 A099722

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 26 2004

STATUS

approved

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Last modified December 5 11:36 EST 2016. Contains 278764 sequences.