login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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: A278595 A005822 A286293 * A216554 A018625 A123557

Adjacent sequences:  A167798 A167799 A167800 * A167802 A167803 A167804

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 12 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 15 15:14 EDT 2019. Contains 328030 sequences. (Running on oeis4.)