A038955 - OEIS

A038955

Primes p such that 71 is a square mod p.

2, 5, 7, 11, 23, 29, 31, 37, 47, 59, 67, 71, 73, 89, 101, 109, 127, 139, 157, 163, 211, 227, 229, 233, 239, 277, 283, 293, 307, 313, 331, 347, 373, 383, 409, 439, 443, 467, 479, 487, 491, 509, 521, 523, 557, 563

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OFFSET

1,1

COMMENTS

Also, only entries p=1 (mod 4) of the sequence are squares mod 71 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 21 2004

LINKS

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

MATHEMATICA

Select[Prime[Range[110]], ! JacobiSymbol[71, #] == -1 &] (* Vincenzo Librandi, Sep 08 2012 *)

CROSSREFS

Sequence in context: A337497 A040122 A318207 * A172981 A141064 A344990

Adjacent sequences: A038952 A038953 A038954 * A038956 A038957 A038958

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved