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A050576
Numbers n such that 101*2^n-1 is prime.
0
10, 18, 54, 70, 1330, 1638, 3894, 4114, 9990, 94194, 900358
OFFSET
1,1
PROG
(PARI) is(n)=ispseudoprime(101*2^n-1) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A350317 A255603 A291931 * A144376 A266708 A186235
KEYWORD
hard,nonn
AUTHOR
N. J. A. Sloane, Dec 29 1999
EXTENSIONS
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
STATUS
approved