A050834 - OEIS

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A050834

Numbers k such that 165*2^k-1 is prime.

2, 3, 5, 6, 8, 11, 12, 15, 18, 23, 27, 36, 39, 44, 45, 56, 59, 63, 81, 84, 150, 188, 264, 275, 282, 299, 321, 338, 390, 552, 657, 722, 930, 1139, 1388, 1491, 1625, 2196, 2519, 2541, 2736, 2766, 3630, 4202, 4875, 5643, 6150, 10134, 20328, 20805, 22902, 25770, 30918

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..74

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

Kosmaj, Riesel list k<300.

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

MATHEMATICA

Select[Range[1000], PrimeQ[165*2^# - 1] & ] (* Robert Price, Dec 29 2018 *)

PROG