A167801 - OEIS

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A167801

Numbers with primitive root -5.

19

2, 4, 11, 17, 19, 22, 34, 37, 38, 53, 59, 73, 74, 79, 97, 106, 113, 118, 121, 131, 137, 139, 146, 151, 157, 158, 173, 179, 193, 194, 197, 226, 233, 239, 242, 257, 262, 274, 277, 278, 289, 293, 302, 311, 314, 317, 331, 346, 353, 358, 359, 361, 373, 386, 394, 397

(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. A105877 (primes with primitive root -5)

Sequence in context: A005822 A331653 A286293 * A216554 A018625 A360401

Adjacent sequences: A167798 A167799 A167800 * A167802 A167803 A167804

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 12 2009

STATUS

approved