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A099882
Number of triples of n-node simple graphs that are isospectral (excluding quadruples, etc.).
2
0, 0, 0, 0, 0, 0, 2, 52, 2015
OFFSET
1,7
LINKS
Eric Weisstein's World of Mathematics, Isospectral Graphs
CROSSREFS
Sequence in context: A297756 A174779 A215744 * A216611 A246485 A340837
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Oct 28 2004
STATUS
approved