OFFSET
1,3
EXAMPLE
Set of orders of elements of A_8 X A_8 is {1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 105}, thus a(8)=19.
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Jul 11 2001
EXTENSIONS
More terms from David Wasserman, Jun 27 2002
STATUS
approved