A038890 - OEIS

A038890

Primes p such that 17 is not a square mod p.

3, 5, 7, 11, 23, 29, 31, 37, 41, 61, 71, 73, 79, 97, 107, 109, 113, 131, 139, 163, 167, 173, 181, 193, 197, 199, 211, 227, 233, 241, 269, 277, 283, 311, 313, 317, 337, 347, 367, 379, 397, 401, 419, 431, 439, 449

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OFFSET

1,1

COMMENTS

Inert rational primes in the field Q(sqrt(17)). - N. J. A. Sloane, Dec 26 2017

Also, primes p that are not squares mod 17 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 13 2004

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Prime@Range[120], JacobiSymbol[17, #] == -1 &] (* Vincenzo Librandi, Sep 08 2012 *)

CROSSREFS

Sequence in context: A186773 A130759 A325155 * A227240 A360567 A226017

Adjacent sequences: A038887 A038888 A038889 * A038891 A038892 A038893

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Offset changed from 0 to 1 by Vincenzo Librandi, Sep 08 2012

STATUS

approved