The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A154625 Primes p such that 71*p + 34 is also prime. 2
 5, 23, 47, 53, 83, 89, 149, 179, 317, 347, 353, 359, 389, 467, 503, 557, 569, 647, 683, 773, 929, 947, 977, 983, 1019, 1103, 1193, 1217, 1229, 1283, 1307, 1319, 1439, 1733, 1847, 1889, 1907, 2069, 2153, 2243, 2309, 2357, 2393, 2399, 2417, 2657, 2687, 2693 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MAPLE a := proc (n) if isprime(n) = true and isprime(71*n+34) = true then n else end if end proc: seq(a(n), n = 1 .. 3000); # Emeric Deutsch, Jan 26 2009 MATHEMATICA Select[Prime[Range[500]], PrimeQ[71#+34]&] (* Harvey P. Dale, Jun 04 2011 *) PROG (Magma) [p: p in PrimesUpTo(2800)| IsPrime(71*p + 34)]; // Vincenzo Librandi, Oct 30 2012 CROSSREFS Cf. A154624. Sequence in context: A222088 A146467 A053518 * A107011 A031387 A057622 Adjacent sequences: A154622 A154623 A154624 * A154626 A154627 A154628 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Jan 17 2009 EXTENSIONS Extended by Emeric Deutsch, Jan 26 2009 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 3 05:03 EST 2023. Contains 367531 sequences. (Running on oeis4.)