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A038954 Primes p such that 70 is not a square mod p. 1
13, 19, 29, 41, 43, 47, 59, 67, 71, 79, 89, 103, 107, 109, 113, 131, 137, 139, 149, 151, 157, 163, 167, 173, 191, 193, 223, 233, 239, 241, 251, 293, 337, 347, 359, 367, 383, 389, 397, 409, 419, 421, 431, 443, 457 (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[70, #] == - 1 &] (* Vincenzo Librandi, Sep 09 2012 *)

PROG

(PARI) select(n->!issquare(Mod(70, n)), primes(100)) \\ Charles R Greathouse IV, Sep 09 2012

CROSSREFS

Sequence in context: A094105 A073620 A089391 * A005106 A120140 A101849

Adjacent sequences:  A038951 A038952 A038953 * A038955 A038956 A038957

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 August 5 18:00 EDT 2021. Contains 346488 sequences. (Running on oeis4.)