A099883 - OEIS

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A099883

Number of simple n-node graphs that are isospectral to at least one other graph on n nodes.

0, 0, 0, 0, 1, 10, 110, 1722, 51039 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,6`
	LINKS	`Eric Weisstein's World of Mathematics, Isospectral Graphs`
	CROSSREFS	`Cf. A099881, A099882.` `Sequence in context: A049398 A055530 A108487 * A146753 A020767 A036603` `Adjacent sequences: A099880 A099881 A099882 * A099884 A099885 A099886`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), Oct 28, 2004`

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Last modified February 16 01:31 EST 2012. Contains 205860 sequences.