A023232 Primes p such that 8*p + 9 is also prime.

11, 13, 23, 29, 31, 41, 43, 53, 71, 73, 79, 83, 109, 149, 151, 193, 199, 211, 233, 251, 263, 269, 283, 331, 349, 353, 379, 389, 401, 419, 431, 461, 499, 521, 541, 563, 569, 599, 601, 643, 653, 659, 661, 673, 743, 809, 821, 853, 881, 911, 941, 983, 991, 1009, 1019, 1033

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[300]], PrimeQ[8#+9]&]  (* Harvey P. Dale, Jan 26 2011 *)

Prog

(Magma) [n: n in PrimesUpTo(1100) | IsPrime(8*n+9)]; // Vincenzo Librandi, Nov 20 2010

Crossrefs

Sequence in context: A208296 A289696 A365313 * A075519 A019406 A289688

Adjacent sequences: A023229 A023230 A023231 * A023233 A023234 A023235

Keyword

nonn,easy

Author

David W. Wilson

Status

approved