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A032375 Numbers k such that 51*2^k+1 is prime. 1
1, 3, 7, 9, 13, 17, 25, 43, 53, 83, 89, 92, 119, 175, 187, 257, 263, 267, 321, 333, 695, 825, 1485, 1917, 2660, 2967, 3447, 3659, 4121, 5225, 7377, 8543, 9584, 10707, 18032, 18465, 20733, 20807, 26703, 45541, 59217, 68956, 73571, 103664, 140504, 142327, 156443 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Jeppe Stig Nielsen, Table of n, a(n) for n = 1..60
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300
PROG
(PARI) is(n)=ispseudoprime(51*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A284894 A020497 A023490 * A089556 A225495 A111223
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Hugo Pfoertner, Jun 20 2003
More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013
Terms moved from Data section to b-files, and more terms appended to b-file, by Jeppe Stig Nielsen, Jan 18 2020
STATUS
approved

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)