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%I
%S 1,3,4,15,18,21,27,37,45,55,58,69,73,87,171,201,232,307,375,567,882,
%T 2869,3364,4071,4825,15328,20341,26641,36703,57291,62973,67347,141253
%N Numbers n such that 285*2^n+1 is prime.
%H 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 Wilfrid Keller, <a href="http://www.prothsearch.net/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>
%K hard,nonn
%O 1,2
%A _N. J. A. Sloane_, Dec 29 1999
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