# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a050896 Showing 1-1 of 1 %I A050896 %S A050896 6,12,16,22,34,40,72,198,220,348,376,552,594,814,972,3168,3702,3834, %T A050896 4642,5116,9720,20434,53692,123678,147802,204516,398928 %N A050896 Numbers n such that 275*2^n-1 is prime. %H A050896 Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300 %H A050896 Wilfrid Keller, List of primes k.2^n - 1 for k < 300 %H A050896 Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime %H A050896 Kosmaj, Riesel list k<300. %K A050896 hard,nonn %O A050896 1,1 %A A050896 _N. J. A. Sloane_, Dec 29 1999 %E A050896 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE