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A023226
Primes p such that 7*p + 8 is also prime.
1
3, 5, 17, 29, 47, 53, 59, 89, 107, 137, 149, 227, 347, 359, 383, 389, 443, 479, 503, 509, 557, 593, 599, 617, 659, 683, 743, 773, 839, 857, 887, 947, 953, 1049, 1097, 1187, 1217, 1259, 1307, 1319, 1373, 1409, 1433, 1493, 1499, 1607, 1613, 1637, 1667, 1697, 1709
OFFSET
1,1
LINKS
MATHEMATICA
Select[Prime[Range[900]], PrimeQ[7 # + 8] &] (* Vincenzo Librandi, May 21 2014 *)
PROG
(Magma) [n: n in PrimesUpTo(2000) | IsPrime(7*n+8)]; // Vincenzo Librandi, Nov 20 2010
CROSSREFS
Sequence in context: A283806 A163586 A074931 * A113169 A350856 A174913
KEYWORD
nonn,easy
STATUS
approved