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%I #18 Jan 17 2019 10:08:17
%S 1,2,4,5,8,10,20,22,25,26,32,44,62,77,158,317,500,713,1657,1790,2761,
%T 2794,3704,4174,6772,14348,16132,16160,16766,21097,29125,40094,44824,
%U 49006,67585,74650,94798,162538,173585,239854,450430,565994,707245,839446
%N Numbers n such that 57*2^n-1 is prime.
%H Ray Ballinger and Wilfrid Keller, <a href="http://www.prothsearch.com/riesel1.html">List of primes k.2^n + 1 for k < 300</a>
%H Wilfrid Keller, <a href="http://www.prothsearch.com/riesel2.html">List of primes k.2^n - 1 for k < 300</a>
%H <a href="/index/Pri#riesel">Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime</a>
%H Kosmaj, <a href="http://www.15k.org/riesellist.html">Riesel list k<300</a>.
%o (PARI) is(n)=ispseudoprime(57*2^n-1) \\ _Charles R Greathouse IV_, Jun 13 2017
%K hard,nonn
%O 1,2
%A _N. J. A. Sloane_, Dec 29 1999
%E More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008