A142429 Primes congruent to 18 mod 49.

67, 263, 557, 1439, 1733, 1831, 2027, 2713, 2909, 3203, 3301, 3889, 4673, 4967, 5261, 5653, 5849, 6143, 6829, 7417, 7907, 8887, 9181, 9377, 9769, 10259, 10357, 10651, 10847, 11239, 11827, 12611, 13003, 13297, 13591, 14081, 14669, 14767, 15061, 15551, 15649

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[{18}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)
Select[Range[18, 16000, 49], PrimeQ] (* Harvey P. Dale, Jul 27 2017 *)

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 18]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==18 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A142514 A142273 A141985 * A158689 A142486 A158730

Adjacent sequences: A142426 A142427 A142428 * A142430 A142431 A142432

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved