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 A032459 Numbers k such that 165*2^k+1 is prime. 1
 1, 2, 3, 5, 7, 9, 12, 17, 25, 33, 39, 43, 51, 65, 71, 72, 84, 100, 104, 168, 198, 264, 282, 293, 352, 379, 611, 676, 719, 729, 745, 1013, 1407, 1417, 1532, 1887, 1902, 1993, 2137, 2294, 2381, 2509, 3259, 4224, 4713, 5719, 6613, 7515, 8575, 8935, 11598, 12500 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Jeppe Stig Nielsen, Table of n, a(n) for n = 1..105 (terms n = 1..101 from Robert Price) Ray Ballinger, Proth Search Page Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300 Wilfrid Keller, List of primes k.2^n - 1 for k < 300 MATHEMATICA Select[Range[1000], PrimeQ[165*2^# + 1] & ] (* Robert Price, Dec 18 2018 *) PROG (PARI) is(n)=ispseudoprime(165*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017 CROSSREFS Sequence in context: A237826 A080000 A333573 * A263647 A028870 A057886 Adjacent sequences:  A032456 A032457 A032458 * A032460 A032461 A032462 KEYWORD nonn,hard AUTHOR EXTENSIONS a(52)-a(101) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 18 2018 STATUS approved

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Last modified March 31 03:48 EDT 2020. Contains 333136 sequences. (Running on oeis4.)