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A167803 Numbers with primitive root -7. 19
2, 3, 5, 6, 9, 10, 13, 17, 18, 26, 27, 31, 34, 41, 47, 54, 59, 61, 62, 81, 82, 83, 89, 94, 97, 101, 103, 118, 122, 131, 139, 162, 166, 167, 169, 173, 178, 194, 199, 202, 206, 227, 229, 241, 243, 251, 257, 262, 269, 271, 278, 283, 289, 293, 307, 334, 338, 346, 349 (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=-7; Select[Range[2, 2000], MultiplicativeOrder[pr, # ] == EulerPhi[ # ] &]

CROSSREFS

Cf. A105879 (primes with primitive root -7)

Sequence in context: A294849 A320226 A290564 * A092213 A117142 A238617

Adjacent sequences:  A167800 A167801 A167802 * A167804 A167805 A167806

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 12 2009

STATUS

approved

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Last modified August 20 18:11 EDT 2019. Contains 326154 sequences. (Running on oeis4.)