id:A098625 - 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 edges.

+0
1

1, 0, 2, 4, 39, 228, 2400, 23616, 307692, 4197408, 67658769, 1174316570, 22916090131, 482946085932 (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: A009835 A009834 A018992 this_sequence A057777 A139735 A098337` `Adjacent sequences: A098622 A098623 A098624 this_sequence A098626 A098627 A098628`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 26 2004`

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.