A158016 Primes p such that 8*p-1 is also prime.

3, 13, 19, 61, 79, 103, 163, 181, 193, 223, 229, 313, 331, 349, 409, 433, 439, 541, 571, 613, 619, 691, 751, 769, 853, 859, 919, 991, 1021, 1033, 1039, 1321, 1381, 1423, 1483, 1543, 1549, 1621, 1699, 1759, 1801, 1861, 1873, 1879, 1951, 1999, 2011, 2029, 2113

Offset

1,1

Links

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

Mathematica

Select[Prime[Range[600]], PrimeQ[(8 # - 1)]&] (* Vincenzo Librandi, Apr 14 2013 *)

Prog

(Magma) [p: p in PrimesUpTo(2200) | IsPrime(8*p - 1)]; // Vincenzo Librandi, Apr 14 2013

Crossrefs

Cf. A005382 for the type 2p-1, A062737 for 4p-1, A158015 for 6p-1, A158017 for 10p-1.

Sequence in context: A024469 A007697 A055202 * A281998 A294676 A293465

Adjacent sequences: A158013 A158014 A158015 * A158017 A158018 A158019

Keyword

nonn,easy

Author

Roger L. Bagula, Mar 11 2009

Extensions

Edited by the Associate Editors of the OEIS, Apr 22 2009

Status

approved