OFFSET
1,3
COMMENTS
It would also be interesting to have the sequence giving the number of different permutation groups arising in this way (not just the distinct orders). - N. J. A. Sloane, Jun 04 2004
LINKS
Zoran Maksimovic, Number of graphs on n nodes whose automorphism group orders are k, n<=11
Eric Weisstein's World of Mathematics, Graph Automorphism
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Jun 03 2004
EXTENSIONS
a(8) and a(9) from Eric W. Weisstein, Jun 06 2004
a(10) and a(11) from Zoran Maksimovic, Vladeta Jovovic, Jan 21 2005
STATUS
approved