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 A167793 Numbers with primitive root 5. 19
 2, 3, 6, 7, 9, 14, 17, 18, 23, 27, 34, 37, 43, 46, 47, 49, 53, 54, 73, 74, 81, 83, 86, 94, 97, 98, 103, 106, 107, 113, 137, 146, 157, 162, 166, 167, 173, 193, 194, 197, 206, 214, 223, 226, 227, 233, 243, 257, 263, 274, 277, 283, 289, 293, 307, 314, 317, 334, 343, 346 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA pr=5; Select[Range[2, 2000], MultiplicativeOrder[pr, # ] == EulerPhi[ # ] &] CROSSREFS Cf. A019335 (primes with primitive root 5) Sequence in context: A246647 A177729 A049993 * A262932 A018423 A018700 Adjacent sequences:  A167790 A167791 A167792 * A167794 A167795 A167796 KEYWORD nonn AUTHOR T. D. Noe, Nov 12 2009 STATUS approved

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Last modified December 5 13:26 EST 2019. Contains 329751 sequences. (Running on oeis4.)