OFFSET
1,1
COMMENTS
To allow primes less than the specified primitive root m (here, 67) to be included, we use the essentially equivalent definition "Primes p such that the multiplicative order of m mod p is p-1". - N. J. A. Sloane, Dec 02 2019
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[200]], MultiplicativeOrder[67, #] == # - 1 &]
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved