A142435 Primes congruent to 25 mod 49.

613, 809, 907, 1103, 1201, 1789, 2083, 2377, 2671, 3259, 3847, 4337, 4729, 5023, 5807, 6101, 6199, 6689, 6983, 7669, 7963, 8747, 9041, 9433, 9629, 9923, 10903, 11197, 11393, 11491, 11981, 12373, 12569, 13451, 14431, 14627, 15313, 15607, 15803, 15901, 16097

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

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 25]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==25 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A253158 A159641 A100364 * A090869 A020372 A032657

Adjacent sequences: A142432 A142433 A142434 * A142436 A142437 A142438

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved