A142428 Primes congruent to 17 mod 49.

17, 311, 409, 997, 1193, 1291, 1487, 1879, 2467, 2663, 2957, 3251, 3643, 4133, 4231, 4721, 5113, 5309, 5407, 5701, 5897, 6779, 7759, 8053, 8543, 8641, 8837, 9719, 9817, 10111, 10601, 10993, 11287, 11483, 11777, 12071, 12659, 12757, 12953, 13933, 14423

Offset

1,1

Links

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

Formula

a(n) ~ 42n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[2500]], MemberQ[{17}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 17]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==17 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A129992 A197526 A282965 * A331492 A244764 A089571

Adjacent sequences: A142425 A142426 A142427 * A142429 A142430 A142431

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved