%I
%S 1,5,50,17794,174685429024800,1476099903835055889100,
%T 569361345959217303084880851701375547158,
%U 24894339520238610434672964029323166045198384692144
%N 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.
%C The formula comes from a cycle index; There is a similar formula for directed Cayley graphs
%D C. Godsil, On Cayley graph isomorphisms, Ars, Combin., 15:231246, 1983
%H B. Alspach and M. Mishna, <a href="http://dx.doi.org/10.1016/S0012365X(02)003199">Enumeration of Cayley graphs and digraphs</a>, Discr. Math., 256 (2002), 527539.
%H M. Mishna, <a href="http://people.math.sfu.ca/~mmishna/PUB/sfuthesis.pdf">Cayley Graphs </a>
%Y Cf. A049287.
%K nonn
%O 1,2
%A _Marni Mishna_, May 18 2002
