A142415 Primes congruent to 2 mod 49.

2, 149, 443, 541, 1031, 1129, 1423, 1619, 1913, 2011, 2207, 3089, 3187, 3677, 4363, 4657, 4951, 5147, 5441, 6029, 6323, 6421, 6911, 7499, 7793, 8087, 8969, 9067, 9851, 9949, 10243, 10733, 10831, 11027, 11321, 11909, 12007, 12203, 12301, 12497, 12791, 12889

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[{2}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 27 2012 *)
Select[Range[2, 13000, 49], PrimeQ] (* Harvey P. Dale, May 30 2020 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 49 eq 2]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%49==2 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A333495 A175974 A062596 * A068987 A273047 A209077

Adjacent sequences: A142412 A142413 A142414 * A142416 A142417 A142418

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved