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A099690 Consider the family of multigraphs enriched by the species of mod-6 sets. Sequence gives number of those multigraphs with 6n loops and arcs. 0
1, 2, 6008, 463376006 (list; graph; refs; listen; history; text; internal format)
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..3.

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

CROSSREFS

Sequence in context: A057645 A129060 A190127 * A196750 A107021 A107022

Adjacent sequences:  A099687 A099688 A099689 * A099691 A099692 A099693

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 26 2004

STATUS

approved

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Last modified July 19 09:33 EDT 2019. Contains 325155 sequences. (Running on oeis4.)