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A023221
Primes p such that 6*p + 5 is also prime.
15
2, 3, 7, 11, 13, 17, 29, 31, 37, 41, 43, 59, 71, 73, 79, 83, 97, 107, 109, 113, 137, 139, 151, 157, 163, 181, 191, 193, 197, 227, 239, 241, 251, 263, 269, 277, 307, 311, 317, 337, 347, 349, 367, 373, 389, 401, 409, 421, 431, 443, 449, 479, 487, 499, 503, 541, 557, 577, 587
OFFSET
1,1
LINKS
MATHEMATICA
Select[Prime[Range[1000]], PrimeQ[6 # + 5] &] (* Vincenzo Librandi, May 20 2014 *)
PROG
(Magma) [n: n in PrimesUpTo(100) | IsPrime(6*n+5)]; // Vincenzo Librandi, Nov 20 2010
CROSSREFS
Subsequence of A059325.
Sequence in context: A045322 A296931 A278698 * A127430 A171595 A106483
KEYWORD
nonn,easy
STATUS
approved