A142427 Primes congruent to 16 mod 49.

163, 359, 457, 653, 751, 947, 2221, 2417, 2711, 3299, 3593, 3691, 5651, 5749, 6043, 6337, 6827, 7121, 7219, 8101, 8297, 8689, 9277, 9473, 9767, 10061, 10159, 10453, 11923, 12119, 12413, 12511, 13001, 13099, 13687, 13883, 14177, 15451, 15647, 16333, 16529, 16823

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[{16}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)
Select[Range[16, 17000, 49], PrimeQ] (* Harvey P. Dale, Mar 06 2019 *)

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 16]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==16 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A212398 A157952 A306931 * A142237 A142283 A357600

Adjacent sequences: A142424 A142425 A142426 * A142428 A142429 A142430

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved