A141895 Primes congruent to 16 mod 21.

37, 79, 163, 331, 373, 457, 499, 541, 709, 751, 877, 919, 1087, 1129, 1171, 1213, 1297, 1381, 1423, 1549, 1759, 1801, 2011, 2053, 2137, 2179, 2221, 2347, 2389, 2473, 2557, 2683, 2767, 2851, 3019, 3061, 3187, 3229, 3271, 3313, 3607, 3691, 3733, 3943, 4027

Offset

1,1

Links

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

Formula

a(n) ~ 12n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Range[16, 5000, 21], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 04 2011 *)

Prog

(Magma) [ p: p in PrimesUpTo(5000) | p mod 21 eq 16 ]; // Vincenzo Librandi, Apr 05 2011
(PARI) is(n)=isprime(n) && n%21==16 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040, A124826.

Sequence in context: A346559 A256585 A211725 * A262566 A323428 A299217

Adjacent sequences: A141892 A141893 A141894 * A141896 A141897 A141898

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved