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A099705
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Consider the family of multigraphs enriched by the species of directed graphs. Sequence gives number of those multigraphs with n loops and edges.
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2
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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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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]
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CROSSREFS
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Sequence in context: A013502 A303286 A322450 * A012488 A181444 A177780
Adjacent sequences: A099702 A099703 A099704 * A099706 A099707 A099708
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Oct 26 2004
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STATUS
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approved
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