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A050833 Numbers k such that 163*2^k-1 is a prime. 0
3, 31, 63, 303, 4731, 31651, 45171, 96111, 105219, 341611, 577723 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300
MATHEMATICA
Select[Range[1000], PrimeQ[163*2^# - 1] & ] (* Robert Price, Dec 23 2018 *)
CROSSREFS
Sequence in context: A341928 A238663 A141966 * A041207 A133203 A062616
KEYWORD
hard,nonn,more
AUTHOR
N. J. A. Sloane, Dec 29 1999
EXTENSIONS
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
a(11) from the Wilfrid Keller link by Robert Price, Dec 23 2018
STATUS
approved

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Last modified June 25 15:24 EDT 2024. Contains 373705 sequences. (Running on oeis4.)