OFFSET
1,1
COMMENTS
Sequence begins at the first prime with at least 2 primitive roots, namely 5.
EXAMPLE
The smallest two positive primitive roots of a(26)=567719161 are 43 and 172. No integer less than 567719161 has a second root greater than or equal to 172.
CROSSREFS
KEYWORD
nonn
AUTHOR
Ken Takusagawa, Nov 27 2006
STATUS
approved