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A156014 Primes p such that 4*p+9, 8*p+21 are both prime. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
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
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Feb 01 2009
STATUS
approved

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Last modified June 14 11:11 EDT 2024. Contains 373396 sequences. (Running on oeis4.)