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A099707
Consider the family of multigraphs enriched by the species of directed graphs. Sequence gives number of those multigraphs with n arcs.
2
1, 2, 40, 1632, 140128, 42396096, 71916221184, 569069398642688, 18501543711357418496, 2419851465592233142433792
(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..9.
G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission]
CROSSREFS
Sequence in context: A341589 A286124 A275931 * A198248 A261732 A292418
Adjacent sequences: A099704 A099705 A099706 * A099708 A099709 A099710
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 26 2004
STATUS
approved

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Last modified November 7 10:03 EST 2024. Contains 377533 sequences.
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