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A032384
Numbers k such that 69*2^k+1 is prime.
0
1, 2, 10, 14, 19, 26, 50, 55, 145, 515, 842, 1450, 2159, 2290, 2306, 2335, 3379, 4025, 4825, 7850, 9194, 10409, 18743, 20993, 34433, 40691, 69119, 172349, 211226, 353818, 367583, 394574, 503641, 617993, 631121, 724802, 1206353, 1316758, 1595083, 1628378, 1816739
OFFSET
1,2
PROG
(PARI) is(n)=ispseudoprime(69*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A345017 A349832 A050546 * A032624 A350059 A349833
KEYWORD
nonn
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
STATUS
approved