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A099680
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Consider the family of multigraphs enriched by the species of ternary sets. Sequence gives number of those multigraphs with 3n edges.
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0
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OFFSET
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0,3
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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..6.
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: A225686 A221779 A122801 * A352086 A184367 A114934
Adjacent sequences: A099677 A099678 A099679 * A099681 A099682 A099683
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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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