A153218 Numbers k such that 6k + 7 is prime.

0, 1, 2, 4, 5, 6, 9, 10, 11, 12, 15, 16, 17, 20, 22, 24, 25, 26, 29, 31, 32, 34, 36, 37, 39, 44, 45, 46, 50, 51, 54, 55, 57, 60, 61, 62, 65, 67, 69, 71, 72, 75, 76, 80, 82, 86, 89, 90, 94, 95, 99, 100, 101, 102, 104, 106, 109, 111, 114, 117, 120, 121, 122, 124, 125, 127, 130

Offset: 1

Author

Vincenzo Librandi, Dec 21 2008

Keywords

• nonn
• easy

Comments

One less than the associated term in A024899. - R. J. Mathar, Jan 05 2011

Links

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

Crossrefs

Cf. A153219.

Programs

Magma

[n: n in [0..150] | IsPrime(6*n + 7)]; // Vincenzo Librandi, Sep 24 2012

Mathematica

Select[Range[0, 150], PrimeQ[6# + 7] &] (* Vincenzo Librandi, Sep 24 2012 *)

PARI

is(n)=isprime(6*n+7) \\ Charles R Greathouse IV, Sep 24 2012