A024896 Numbers k such that 5*k - 2 is prime.

1, 3, 5, 9, 11, 15, 17, 21, 23, 33, 35, 39, 45, 47, 53, 57, 59, 63, 71, 75, 77, 87, 89, 93, 101, 105, 113, 119, 123, 129, 131, 135, 137, 147, 149, 155, 165, 171, 173, 177, 191, 197, 203, 207, 213, 219, 221, 225, 231, 233, 239, 243, 245, 257, 261, 275, 285, 287, 291, 297, 299

Offset

1,2

Links

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

Mathematica

Select[Range[300], PrimeQ[5 # - 2] &] (* Vincenzo Librandi, Sep 25 2012 *)

Prog

(Magma) [n: n in [1..1000] | IsPrime(5*n-2)] // Vincenzo Librandi, Nov 20 2010
(PARI) is(n)=isprime(5*n-2) \\ Charles R Greathouse IV, May 22 2017

Crossrefs

Sequence in context: A084060 A328574 A227157 * A160771 A249426 A040976

Adjacent sequences: A024893 A024894 A024895 * A024897 A024898 A024899

Keyword

nonn,easy

Author

Clark Kimberling

Status

approved