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A099719
Consider the family of multigraphs enriched by the species of trees. Sequence gives number of those multigraphs with n arcs.
2
1, 1, 7, 89, 1720, 45887, 1595192, 69438623, 3675895762, 231400961167, 17017734251838, 1441193215057543
OFFSET
0,3
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: A371386 A295543 A062747 * A142995 A350937 A200832
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 26 2004
STATUS
approved