%I A032496
%S A032496 1,3,5,7,17,29,31,89,135,229,257,305,493,781,811,1177,1315,1709,2267,
%T A032496 5283,6109,7763,7923,16481,18457,29187,39487,53393,59905
%N A032496 Numbers n such that 239*2^n+1 is prime.
%H A032496 Ray Ballinger, <a href="http://www.prothsearch.net/index.html">Proth 
               Search Page</a>
%H A032496 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 A032496 Wilfrid Keller, <a href="http://www.prothsearch.net/riesel2.html">List 
               of primes k.2^n - 1 for k < 300</a>
%H A032496 <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>
%Y A032496 Sequence in context: A053341 A086086 A141772 this_sequence A002092 A057476 
               A016041
%Y A032496 Adjacent sequences: A032493 A032494 A032495 this_sequence A032497 A032498 
               A032499
%K A032496 nonn,hard
%O A032496 1,2
%A A032496 N. J. A. Sloane (njas(AT)research.att.com).