id:A006610 - OEIS Search Results

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Number of n-node trees not determined by their spectra.
(Formerly M1959)

+0
1

0, 0, 0, 0, 0, 0, 0, 2, 10, 8, 60, 119, 415, 826, 2470, 5246, 14944, 32347 (list; graph; listen)

	OFFSET	`1,8`
	REFERENCES	`N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).` `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).`
	LINKS	`Index entries for sequences related to trees`
	CROSSREFS	`Sequence in context: A037187 A166542 A092939 this_sequence A033839 A114264 A081100` `Adjacent sequences: A006607 A006608 A006609 this_sequence A006611 A006612 A006613`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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