A156014 Primes p such that 4*p+9, 8*p+21 are both prime.

2, 5, 11, 37, 41, 47, 67, 97, 137, 151, 191, 197, 211, 251, 277, 307, 317, 401, 421, 431, 607, 617, 881, 967, 1031, 1201, 1307, 1367, 1427, 1511, 1531, 1747, 1831, 1867, 2221, 2281, 2347, 2381, 2531, 2791, 2797, 2857, 2897, 2917, 3037, 3061, 3271, 3541, 3677

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[4000]], And @@ PrimeQ[{4# + 9, 8# + 21}]&] (* Vincenzo Librandi, Oct 31 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(4000)|IsPrime(4*p + 9) and IsPrime (8*p + 21)]; // Vincenzo Librandi, Oct 31 2012

Crossrefs

Cf. A156010.

Sequence in context: A343463 A130622 A112600 * A268397 A261438 A092298

Adjacent sequences: A156011 A156012 A156013 * A156015 A156016 A156017

Keyword

nonn,easy

Author

Vincenzo Librandi, Feb 01 2009

Status

approved