A099707 - OEIS

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A099707

Consider the family of multigraphs enriched by the species of directed graphs. Sequence gives number of those multigraphs with n arcs.

1, 2, 40, 1632, 140128, 42396096, 71916221184, 569069398642688, 18501543711357418496, 2419851465592233142433792 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	REFERENCES	G. Paquin, D\'enombrement de multigraphes enrichis, M\'emoire, Math. Dept., Univ. Qu\'ebec \`a Montr\'eal, 2004.
	CROSSREFS	`Sequence in context: A127429 A012834 A012241 * A198248 A163826 A000816` `Adjacent sequences: A099704 A099705 A099706 * A099708 A099709 A099710`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 26 2004`

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Last modified February 17 09:13 EST 2012. Contains 206007 sequences.