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A099699 Consider the family of multigraphs enriched by the species of involutions. Sequence gives number of those multigraphs with n arcs. +0
1
1, 1, 8, 108, 2200, 61708, 2249268, 102377404, 5651999688, 370171228504, 28262385542832 (list; graph; listen)
OFFSET

0,3

REFERENCES

G. Paquin, D\'enombrement de multigraphes enrichis, M\'emoire, Math. Dept., Univ. Qu\'ebec \`a Montr\'eal, 2004.

CROSSREFS

Sequence in context: A119936 A048543 A120975 this_sequence A084915 A138456 A095917

Adjacent sequences: A099696 A099697 A099698 this_sequence A099700 A099701 A099702

KEYWORD

nonn

AUTHOR

njas, Oct 26 2004

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.


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