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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

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 A174913 A079496

Adjacent sequences:  A023223 A023224 A023225 * A023227 A023228 A023229

KEYWORD

nonn,easy

AUTHOR

David W. Wilson

STATUS

approved

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Last modified August 5 21:02 EDT 2021. Contains 346488 sequences. (Running on oeis4.)