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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
pr=-12; Select[Prime[Range], MultiplicativeOrder[pr, # ] == #-1 &]
Sequence in context: A153504 A044438 A101414 * A019410 A133423 A154632
Adjacent sequences: A105881 A105882 A105883 * A105885 A105886 A105887
N. J. A. Sloane, Apr 24 2005