OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..7700
MATHEMATICA
Select[Prime[Range[1, 100]], PrimitiveRoot[#] =!= 3 &]
Select[Prime[Range[100]], PrimitiveRoot[#, 1]!=3&] (* Harvey P. Dale, Jan 01 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jan 11 2017
STATUS
approved