A142454 Primes congruent to 47 mod 49.

47, 439, 733, 929, 1223, 1321, 1811, 2203, 2399, 2693, 2791, 3673, 3967, 4261, 4457, 4751, 5437, 5927, 6221, 6907, 7103, 7691, 7789, 8377, 8573, 8867, 9161, 9749, 10141, 10337, 10631, 10729, 11317, 11807, 12101, 12689, 12983, 13669, 13963, 14159, 14551

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[{47}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 47]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==47 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A324625 A239539 A217119 * A200954 A126300 A012149

Adjacent sequences: A142451 A142452 A142453 * A142455 A142456 A142457

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved