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A020562
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Number of cyclic multigraphs on n labeled edges (without loops).
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0
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1, 1, 3, 17, 152, 1933, 32608, 695657, 18148533, 564860131, 20581455139, 864802010595, 41392831046804, 2233799248861031, 134737655762330602, 9015762313899965851, 664889968074287179739
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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REFERENCES
| G. Labelle, Counting enriched multigraphs..., Discrete Math., 217 (2000), 237-248.
G. Paquin, D\'enombrement de multigraphes enrichis, M\'emoire, Math. Dept., Univ. Qu\'ebec \`a Montr\'eal, 2004.
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CROSSREFS
| Sequence in context: A007767 A075820 A145081 * A193161 A135751 A168441
Adjacent sequences: A020559 A020560 A020561 * A020563 A020564 A020565
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KEYWORD
| nonn
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AUTHOR
| Gilbert Labelle (gilbert(AT)lacim.uqam.ca), Simon Plouffe (simon.plouffe(AT)gmail.com)
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