OFFSET
0,3
EXAMPLE
Set of orders of elements of S_8 X S_8 is {1,2,3,4,5,6,7,8,10,12,14,15,20,21,24, 28,30,35,40,42,56,60,70,84,105,120}, thus a(8) = 26.
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Jul 10 2001
EXTENSIONS
More terms from David Wasserman, Jul 10 2002
a(0)=1 prepended by Alois P. Heinz, Jan 01 2023
STATUS
approved