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A006612 Number of n-node bipartite graphs not determined by their spectra.
(Formerly M1654)
0
0, 0, 0, 0, 2, 6, 21, 75, 411, 2114, 13529, 108243 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,5
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
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
Sequence in context: A105872 A304781 A148490 * A116769 A294817 A294772
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(10)-a(12) from Sean A. Irvine, May 15 2017
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)