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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A032392 Numbers k such that 85*2^k+1 is prime. 0
 4, 6, 10, 30, 34, 36, 38, 74, 88, 94, 148, 200, 624, 1300, 2458, 2556, 3638, 3834, 8956, 15058, 15818, 25954, 187576, 382836, 466658, 818760, 876458, 892568, 1072368, 1910520 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..30. Ray Ballinger, Proth Search Page Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300 Y. Gallot, Proth.exe: Windows Program for Finding Large Primes Wilfrid Keller, List of primes k.2^n - 1 for k < 300 Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime PROG (PARI) is(n)=ispseudoprime(85*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017 CROSSREFS Sequence in context: A322961 A291542 A242565 * A253048 A271956 A242502 Adjacent sequences: A032389 A032390 A032391 * A032393 A032394 A032395 KEYWORD nonn AUTHOR James R. Buddenhagen EXTENSIONS More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013 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 August 15 04:38 EDT 2024. Contains 375172 sequences. (Running on oeis4.)