OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
pr=75; Select[Prime[Range[200]], MultiplicativeOrder[pr, # ] == #-1 &]
Join[{2, 7, 17, 31, 41, 53}, Select[Prime[Range[200]], MemberQ[ PrimitiveRootList[ #], 75]&]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 15 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved