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A038930 Primes p such that 51 is not a square mod p. 1
2, 11, 19, 23, 37, 43, 53, 61, 67, 71, 73, 89, 97, 101, 103, 107, 109, 127, 131, 137, 149, 151, 167, 181, 193, 223, 227, 241, 257, 271, 277, 281, 293, 307, 311, 313, 331, 337, 347, 353, 389, 397, 419, 431, 461 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Prime@Range[120], JacobiSymbol[51, #] == -1 &] (* Vincenzo Librandi, Sep 09 2012 *)

PROG

(PARI) select(n->!issquare(Mod(51, n)), primes(100)) \\ Charles R Greathouse IV, Sep 09 2012

CROSSREFS

Sequence in context: A018443 A163058 A079062 * A019375 A078784 A117196

Adjacent sequences:  A038927 A038928 A038929 * A038931 A038932 A038933

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Offset changed from 0 to 1 by Vincenzo Librandi, Sep 09 2012

STATUS

approved

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Last modified December 14 09:41 EST 2019. Contains 329979 sequences. (Running on oeis4.)