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A032402
Numbers k such that 105*2^k+1 is prime.
1
1, 2, 5, 7, 8, 12, 14, 23, 27, 33, 38, 49, 61, 62, 85, 93, 94, 107, 155, 182, 215, 273, 382, 392, 413, 434, 490, 1631, 3063, 3331, 3461, 3619, 4199, 4298, 5191, 7967, 8837, 9589, 10367, 13700, 14458, 14821, 21021, 21409, 22939, 29927, 30552, 30840
OFFSET
1,2
PROG
(PARI) is(n)=ispseudoprime(105*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A192111 A294635 A362591 * A299326 A280848 A190900
KEYWORD
nonn
STATUS
approved