A005124 Numbers k such that 8k + 3 is prime.

0, 1, 2, 5, 7, 8, 10, 13, 16, 17, 20, 22, 26, 28, 31, 35, 38, 41, 43, 47, 52, 55, 58, 61, 62, 65, 68, 70, 71, 73, 77, 80, 82, 85, 86, 92, 98, 101, 103, 107, 110, 113, 118, 121, 127, 131, 136, 140, 145, 146, 148, 157, 160, 161, 163, 178, 181, 182, 185, 187

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Programs

Magma

[n: n in [0..200] | IsPrime(8*n+3)]; // Vincenzo Librandi, Jun 25 2014

Mathematica

(#-3)/8&/@Select[Range[3,1303,8],PrimeQ] (* Harvey P. Dale, May 19 2012 *)
Select[Range[0, 300], PrimeQ[8 # + 3] &] (* Vincenzo Librandi, Jun 25 2014 *)

PARI

is(n)=isprime(8*n+3) \\ Charles R Greathouse IV, Feb 17 2017

Extensions

More terms from Wesley Ivan Hurt, Jun 25 2014