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A099697
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Consider the family of multigraphs enriched by the species of involutions. Sequence gives number of those multigraphs with n loops and edges.
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3
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1, 2, 11, 93, 1135, 18567, 387976, 9991794, 308837454, 11225560583, 472141867849
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OFFSET
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0,2
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REFERENCES
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G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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