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A032374
Numbers k such that 49*2^k+1 is prime.
1
2, 6, 10, 30, 42, 54, 66, 118, 390, 594, 1202, 2334, 6242, 7446, 11858, 48666, 68050, 72210, 88090, 113022, 406814, 501238, 1103430, 1646042, 3837090
OFFSET
1,1
PROG
(PARI) is(n)=ispseudoprime(49*2^n+1) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
Sequence in context: A102581 A152000 A038042 * A342401 A074095 A079855
KEYWORD
nonn
EXTENSIONS
More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html), Joerg Arndt, Apr 07 2013
a(25) from Jeppe Stig Nielsen, Sep 22 2019
STATUS
approved