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A098637
Consider the family of multigraphs enriched by the species of odd sets. Sequence gives number of those multigraphs with n loops and edges.
3
1, 2, 7, 45, 431, 5677, 97304, 2086120, 54337094, 1681862711, 60786960947, 2529205845825
OFFSET
0,2
REFERENCES
G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.
LINKS
G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission]
CROSSREFS
Sequence in context: A331711 A223001 A066612 * A162045 A326878 A153549
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 26 2004
STATUS
approved