A105139 Numbers n such that 512n+257 is prime.

0, 1, 6, 15, 18, 27, 28, 43, 45, 52, 60, 61, 70, 73, 78, 81, 85, 90, 96, 97, 111, 112, 117, 138, 147, 151, 153, 165, 172, 178, 187, 192, 196, 202, 208, 210, 211, 213, 216, 222, 228, 231, 235, 243, 250, 252, 253, 255, 262, 265, 270, 280, 291, 298, 301, 312, 325, 328, 330, 337

Offset

1,3

Links

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

Mathematica

Select[Range[0, 500], PrimeQ[512 # + 257]&] (* Vincenzo Librandi, Jan 08 2013 *)

Prog

(Magma) [n: n in [0..350] | IsPrime(512*n + 257)]; // Vincenzo Librandi, Jan 08 2013
(PARI) is(n)=isprime(512*n+257) \\ Charles R Greathouse IV, Jun 06 2017

Crossrefs

Cf. A095278, A105133-A105140, A002145, A007521, A105126-A105132.

Sequence in context: A138922 A362141 A044058 * A002599 A001484 A217480

Adjacent sequences: A105136 A105137 A105138 * A105140 A105141 A105142

Keyword

nonn,easy

Author

N. J. A. Sloane, based on correspondence from Marco Matosic, Apr 11 2005

Status

approved