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A070995 Number of nonisomorphic (undirected) Cayley graphs for the group Zp x Zp, where Zp is the elementary Abelian group of order p and p is prime. The sequence is index by primes, though starts with 1. 0
1, 5, 50, 17794, 174685429024800, 1476099903835055889100, 569361345959217303084880851701375547158, 24894339520238610434672964029323166045198384692144 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The formula comes from a cycle index; There is a similar formula for directed Cayley graphs

REFERENCES

C. Godsil, On Cayley graph isomorphisms, Ars, Combin., 15:231-246, 1983

LINKS

Table of n, a(n) for n=1..8.

B. Alspach and M. Mishna, Enumeration of Cayley graphs and digraphs, Discr. Math., 256 (2002), 527-539.

M. Mishna, Cayley Graphs

CROSSREFS

Cf. A049287.

Sequence in context: A247951 A082100 A180976 * A063803 A106425 A160779

Adjacent sequences:  A070992 A070993 A070994 * A070996 A070997 A070998

KEYWORD

nonn

AUTHOR

Marni Mishna, May 18 2002

STATUS

approved

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Last modified September 25 21:33 EDT 2017. Contains 292500 sequences.