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A099680 Consider the family of multigraphs enriched by the species of ternary sets. Sequence gives number of those multigraphs with 3n edges. +0
1
1, 1, 21, 2689, 1162525, 1213162861, 2531581232565 (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: A144853 A131314 A122801 this_sequence A114934 A098375 A095154

Adjacent sequences: A099677 A099678 A099679 this_sequence A099681 A099682 A099683

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 26 2004

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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