A142369 Primes congruent to 18 mod 47.

347, 911, 1193, 1381, 1663, 2039, 2791, 3167, 3449, 3637, 3919, 4013, 4201, 4483, 5987, 6269, 6551, 6833, 7867, 8243, 8431, 8713, 8807, 9277, 9371, 10499, 10687, 10781, 11251, 11909, 12097, 12379, 12473, 13037, 13789, 13883, 14071, 14447, 15199, 16139, 16421

Offset

1,1

Links

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

Formula

a(n) ~ 46n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[2500]], MemberQ[{18}, Mod[#, 47]]&] (* Vincenzo Librandi, Aug 27 2012 *)
Select[Range[18, 17000, 47], PrimeQ] (* Harvey P. Dale, Mar 06 2016 *)

Prog

(Magma) [p: p in PrimesUpTo(18000) | p mod 47 eq 18]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%47==18 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A210363 A054823 A343701 * A190814 A012868 A343303

Adjacent sequences: A142366 A142367 A142368 * A142370 A142371 A142372

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved