%I A053354
%S A053354 7,15,21,25,27,69,71,105,207,285,611,635,647,969,1127,1159,2407,2529,
%T A053354 3517,3577,6275,6729,7919,8809,9375,27369,31657,44149,58579,59355
%N A053354 Numbers n such that 275*2^n+1 is prime.
%H A053354 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 A053354 Wilfrid Keller, <a href="http://www.prothsearch.net/riesel2.html">List 
               of primes k.2^n - 1 for k < 300</a>
%H A053354 <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 A053354 Sequence in context: A064397 A151971 A014659 this_sequence A022552 A082658 
               A022389
%Y A053354 Adjacent sequences: A053351 A053352 A053353 this_sequence A053355 A053356 
               A053357
%K A053354 hard,nonn
%O A053354 1,1
%A A053354 N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999