A024910 Numbers k such that 9*k - 2 is prime.

1, 5, 7, 9, 11, 17, 25, 27, 31, 35, 37, 39, 41, 47, 49, 51, 61, 67, 69, 75, 77, 79, 81, 95, 101, 111, 115, 117, 119, 121, 125, 135, 137, 139, 145, 147, 159, 161, 165, 179, 181, 185, 189, 195, 199, 207, 209, 215, 217, 221, 235, 237, 245, 247, 249, 255, 257, 261, 265, 271, 275

Offset

1,2

Links

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

Mathematica

Select[Range[300], PrimeQ[9 # - 2] &] (* Vincenzo Librandi, Sep 26 2012 *)

Prog

(Magma) [n: n in [1..300] | IsPrime(9*n-2)]; // Vincenzo Librandi, Nov 19 2010
(PARI) is(n)=isprime(9*n-2) \\ Charles R Greathouse IV, Jun 06 2017

Crossrefs

Cf. A061241 (associated primes).

Sequence in context: A228233 A256091 A229064 * A283771 A045236 A346368

Adjacent sequences: A024907 A024908 A024909 * A024911 A024912 A024913

Keyword

nonn,easy

Author

Clark Kimberling

Status

approved