%I A050845
%S A050845 1,17,21,53,253,2173,3313,5197,5333,6929,28017,40429,47877,80617,110513,
%T A050845 139673,141201,263093,379649,483153
%N A050845 Numbers n such that 187*2^n-1 is prime.
%H A050845 Ray Ballinger and Wilfrid Keller, <a href="http://www.prothsearch.net/
               riesel.html">List of primes k.2^n + 1 for k < 300</a>
%H A050845 Wilfrid Keller, <a href="http://www.prothsearch.net/riesel2.html">List 
               of primes k.2^n - 1 for k < 300</a>
%H A050845 <a href="Sindx_Pri.html#riesel">Index entries for sequences of n such 
               that k*2^n-1 (or k*2^n+1) is prime</a>
%H A050845 Kosmaj, <a href="http://www.15k.org/riesellist.htm">Riesel list k<300</
               a>.
%Y A050845 Sequence in context: A128546 A060875 A138600 this_sequence A125613 A147052 
               A147132
%Y A050845 Adjacent sequences: A050842 A050843 A050844 this_sequence A050846 A050847 
               A050848
%K A050845 hard,nonn
%O A050845 1,2
%A A050845 N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999
%E A050845 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008