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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
Index entries for primes by primitive root
pr=69; Select[Prime[Range], MultiplicativeOrder[pr, # ] == #-1 &]
Sequence in context: A019379 A107166 A041969 * A060503 A180231 A141172
Adjacent sequences: A019389 A019390 A019391 * A019393 A019394 A019395
David W. Wilson