A156004 Primes p such that 8*p+21 is prime.

2, 5, 11, 17, 19, 31, 37, 41, 47, 61, 67, 79, 89, 97, 101, 107, 131, 137, 149, 151, 157, 179, 191, 197, 199, 211, 239, 241, 251, 277, 281, 307, 317, 347, 367, 401, 419, 421, 431, 439, 449, 457, 461, 479, 487, 499, 509, 541, 547, 577, 599, 607, 617, 619, 647

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[1000]], PrimeQ[8 # + 21] &] (* Vincenzo Librandi, Oct 14 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(700)|IsPrime(8*p+21)]; // Vincenzo Librandi, Oct 14 2012

Crossrefs

Sequence in context: A063535 A091653 A088348 * A174194 A174237 A181580

Adjacent sequences: A156001 A156002 A156003 * A156005 A156006 A156007

Keyword

nonn,easy

Author

Vincenzo Librandi, Feb 01 2009

Status

approved