id:A006611 - OEIS Search Results

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Number of n-node forests not determined by their spectra.
(Formerly M1273)

+0
1

0, 0, 0, 0, 0, 2, 4, 14, 38, 89, 234, 579, 1466 (list; graph; listen)

	OFFSET	`1,6`
	REFERENCES	`C. Godsil and B. D. McKay, Some computational results on the spectra of graphs, pp. 73-92 of Combinatorial Mathematics IV (Adelaide 1975), Lect. Notes Math., 560 (1976).`
	CROSSREFS	`Adjacent sequences: A006608 A006609 A006610 this_sequence A006612 A006613 A006614` `Sequence in context: A000622 A088028 A135960 this_sequence A007462 A053623 A035010`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.