A142320 Primes congruent to 16 mod 45.

61, 151, 241, 331, 421, 601, 691, 1051, 1231, 1321, 1861, 1951, 2131, 2221, 2311, 2671, 2851, 3121, 3301, 3391, 3571, 3931, 4021, 4111, 4201, 4561, 4651, 4831, 5011, 5101, 5281, 5641, 5821, 6091, 6271, 6361, 6451, 6991, 7351, 7621, 8161, 8431, 8521, 8971

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 03 2016

Mathematica

Select[Prime[Range[1200]], MemberQ[{16}, Mod[#, 45]] &] (* Vincenzo Librandi, Aug 26 2012 *)
Select[Range[16, 9000, 45], PrimeQ] (* Harvey P. Dale, Nov 27 2020 *)

Prog

(Magma) [p: p in PrimesUpTo(10000) | p mod 45 eq 16]; // Vincenzo Librandi, Aug 26 2012
(PARI) is(n)=isprime(n) && n%45==16 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A185662 A140726 A051646 * A305172 A316760 A211333

Adjacent sequences: A142317 A142318 A142319 * A142321 A142322 A142323

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved