A153762 Numbers k such that 8k + 9 is prime.

1, 4, 8, 10, 11, 13, 16, 23, 28, 29, 31, 34, 38, 41, 43, 49, 50, 53, 55, 56, 64, 70, 71, 73, 74, 76, 79, 83, 94, 95, 100, 106, 109, 115, 116, 118, 121, 125, 128, 130, 136, 140, 143, 148, 149, 151, 155, 160, 161, 164, 169, 175, 178, 184, 185, 193, 199, 200, 206, 211

Offset: 1

Author

Vincenzo Librandi, Jan 01 2009

Keywords

• nonn
• easy

Comments

One less than the associated term in A005123. - R. J. Mathar, Jan 05 2011

Links

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

Crossrefs

Cf. A023232.

Programs

Magma

[n: n in [0..300] | IsPrime(8*n + 9)]; // Vincenzo Librandi, Sep 24 2012

Mathematica

Select[Range[0, 250],PrimeQ[8*# + 9]&] (* Vincenzo Librandi, Sep 24 2012 *)

PARI

is(n)=isprime(8*n+9) \\ Charles R Greathouse IV, Sep 24 2012