A193064 Primes p for which there is no prime q == 2 (mod 3) that is smaller than p and is a quadratic residue modulo p.

2, 3, 5, 13

Offset

1,1

Comments

Gica proved that if p is a prime different from 2, 3, 5, 13, then a prime q < p exists which is a quadratic residue modulo p and q == 2 (mod 3). His paper has not yet been published, but see A192578 for a reference, link, and examples of a similar result.

Links

Table of n, a(n) for n=1..4.

Crossrefs

Cf. A192578, A192579, A193063.

Sequence in context: A107475 A108225 A259503 * A133832 A328997 A061488

Adjacent sequences: A193061 A193062 A193063 * A193065 A193066 A193067

Keyword

nonn,fini,full

Author

Jonathan Sondow, Jul 15 2011

Status

approved