A024895 Numbers k such that 5*k - 3 is prime.

1, 2, 4, 8, 10, 14, 20, 22, 26, 28, 32, 34, 40, 46, 52, 56, 62, 64, 68, 70, 74, 80, 92, 94, 98, 110, 112, 116, 118, 122, 124, 130, 136, 146, 152, 158, 160, 166, 172, 176, 178, 182, 188, 190, 194, 196, 200, 218, 220, 224, 238, 244, 248, 256, 260, 262, 266, 274, 286, 290, 298, 314

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A045380 (associated primes).

Programs

Magma

[n: n in [1..1000] | IsPrime(5*n-3)]; // Vincenzo Librandi, Nov 20 2010

Mathematica

Select[Range[400],PrimeQ[5#-3]&] (* Harvey P. Dale, Feb 02 2012 *)

PARI

is(n)=isprime(5*n-3) \\ Charles R Greathouse IV, Jun 06 2017