A142328 Primes congruent to 31 mod 45.

31, 211, 571, 661, 751, 1021, 1201, 1291, 1381, 1471, 1741, 1831, 2011, 2281, 2371, 2551, 2731, 3001, 3181, 3271, 3361, 3541, 3631, 4261, 4441, 4621, 4801, 5431, 5521, 5701, 5791, 5881, 6151, 6421, 6691, 6781, 6871, 6961, 7321, 7411, 7591, 7681, 7951, 8221

Offset

1,1

Links

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

Formula

a(n) ~ 24n log n. - Charles R Greathouse IV, Jul 02 2016

Mathematica

Select[Prime[Range[1200]], MemberQ[{31}, Mod[#, 45]]&] (* Vincenzo Librandi, Aug 26 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(10000) | p mod 45 eq 31]; // Vincenzo Librandi, Aug 26 2012 *)
(PARI) is(n)=isprime(n) && n%45==31 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A184058 A096906 A181124 * A022521 A152730 A361700

Adjacent sequences: A142325 A142326 A142327 * A142329 A142330 A142331

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved