A142446 Primes congruent to 38 mod 49.

283, 479, 577, 773, 1361, 1459, 1753, 1949, 2243, 2341, 3517, 4007, 4889, 4987, 5281, 5477, 5869, 6163, 6359, 6653, 6947, 7829, 7927, 8123, 8221, 9103, 9397, 9887, 10181, 10867, 11161, 12043, 12239, 13121, 13219, 13513, 13709, 13807, 14591, 14983, 15277

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[2000]], Mod[#, 49]==38&] (* Harvey P. Dale, Aug 08 2011 *)
Select[Prime[Range[2500]], MemberQ[{38}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 38]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==38 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A081424 A142699 A113157 * A345905 A059257 A332676

Adjacent sequences: A142443 A142444 A142445 * A142447 A142448 A142449

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved