id:A098626 - OEIS Search Results

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Consider the family of multigraphs enriched by the species of derangements. Sequence gives number of those multigraphs with n loops and arcs.

+0
1

1, 0, 2, 4, 57, 348, 5235, 57930, 1037540, 16842496, 363889755, 7792175070, 201054289293, 5345844537876 (list; graph; listen)

	OFFSET	`0,3`
	REFERENCES	G. Paquin, D\'enombrement de multigraphes enrichis, M\'emoire, Math. Dept., Univ. Qu\'ebec \`a Montr\'eal, 2004.
	CROSSREFS	`Sequence in context: A084574 A087621 A062784 this_sequence A012370 A012366 A009513` `Adjacent sequences: A098623 A098624 A098625 this_sequence A098627 A098628 A098629`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 26 2004`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.