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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
Index entries for primes by primitive root
pr=6; Select[Prime[Range], MultiplicativeOrder[pr, # ] == #-1 &]
Sequence in context: A032502 A209871 A167794 * A104070 A019371 A068335
Adjacent sequences: A019333 A019334 A019335 * A019337 A019338 A019339
David W. Wilson