id:A052111 - OEIS Search Results

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Number of self-complementary 2-multigraphs with loops on n nodes.

+0
1

1, 2, 5, 24, 120, 956, 13214, 275848, 10613479, 601955190, 63788179593, 9985272721908, 2906903866536978, 1268802939666164781, 1023198355173637429689, 1258181815243248217067175 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`A 2-multigraph is similar to an ordinary graph except there are 0, 1 or 2 edges between any two nodes (self-loops are not allowed).`
	CROSSREFS	`Cf. A053513, A004104.` `Sequence in context: A010365 A012262 A012254 this_sequence A020022 A026073 A054131` `Adjacent sequences: A052108 A052109 A052110 this_sequence A052112 A052113 A052114`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 21 2000`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research