A105137 Numbers n such that 128n+65 is prime.

1, 3, 4, 9, 12, 16, 21, 24, 33, 36, 37, 42, 43, 46, 49, 54, 58, 61, 66, 67, 72, 79, 81, 88, 93, 94, 102, 103, 106, 112, 114, 123, 124, 126, 138, 148, 154, 157, 163, 166, 168, 177, 186, 187, 196, 198, 199, 201, 204, 207, 211, 213, 214, 219, 231, 232, 238, 252, 256, 262, 264

Offset: 1

Author

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

Keywords

• nonn
• easy

Links

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

Crossrefs

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

Subsequence of A032766.

Programs

Magma

[n: n in [0..500] | IsPrime(128*n+65)]; // Vincenzo Librandi, Jan 07 2013

Mathematica

Select[Range[500], PrimeQ[128 # + 65]&] (* Vincenzo Librandi, Jan 07 2013 *)

PARI

is(n)=isprime(128*n+65) \\ Charles R Greathouse IV, Jun 12 2017