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A032458
Numbers k such that 163*2^k+1 is prime.
1
2, 4, 6, 8, 12, 18, 22, 30, 34, 44, 52, 54, 58, 62, 64, 68, 112, 114, 124, 126, 144, 148, 194, 226, 416, 490, 518, 536, 1642, 4344, 4958, 5104, 7424, 7530, 8134, 13166, 14466, 15124, 16734, 19448, 40746, 51206, 79162, 85736, 93466, 109786, 114412, 116116
OFFSET
1,1
MATHEMATICA
Select[Range[1000], PrimeQ[163*2^# + 1] & ] (* Robert Price, Dec 18 2018 *)
PROG
(PARI) is(n)=ispseudoprime(163*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A273457 A222603 A177710 * A284005 A079212 A354768
KEYWORD
nonn,hard
AUTHOR
EXTENSIONS
a(46)-a(68) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 18 2018
STATUS
approved