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URL: https://oeis.org/A006612

⇱ A006612 - OEIS

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A006612
Number of n-node bipartite graphs not determined by their spectra.
0
0, 0, 0, 0, 2, 6, 21, 75, 411, 2114, 13529, 108243
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
EXTENSIONS
a(10)-a(12) from Sean A. Irvine, May 15 2017
STATUS
approved