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A178925 Number of n-node simple graphs that are determined by spectrum. 1
1, 2, 4, 11, 32, 146, 934, 10624, 223629, 9444562 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Determined by Spectrum
CROSSREFS
Cf. A006608 (simple graphs not determined by spectrum).
Sequence in context: A123424 A123449 A123404 * A298445 A294224 A296270
KEYWORD
nonn,hard,more
AUTHOR
Eric W. Weisstein, Dec 29 2010
EXTENSIONS
a(10) from Eric W. Weisstein, Dec 30 2010
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)