A142797 Primes congruent to 49 mod 60.

109, 229, 349, 409, 709, 769, 829, 1009, 1069, 1129, 1249, 1429, 1489, 1549, 1609, 1669, 1789, 2029, 2089, 2269, 2389, 2689, 2749, 3049, 3109, 3169, 3229, 3469, 3529, 3709, 3769, 3889, 4129, 4549, 4729, 4789, 4909, 4969, 5209, 5449, 5569, 5689, 5749, 5869

Offset

1,1

Links

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

Formula

a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[900]], MemberQ[{49}, Mod[#, 60]] &] (* Vincenzo Librandi, Sep 04 2012 *)
Select[Range[49, 6000, 60], PrimeQ] (* Harvey P. Dale, Oct 02 2018 *)

Prog

(Magma) [p: p in PrimesUpTo(6000) | p mod 60 eq 49 ]; // Vincenzo Librandi, Sep 04 2012
(PARI) is(n)=isprime(n) && n%60==49 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A044722 A142697 A142777 * A140622 A278784 A256380

Adjacent sequences: A142794 A142795 A142796 * A142798 A142799 A142800

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved