%I
%S 6,24,30,106,184,232,460,1258,3480,5458,32886
%N Numbers n such that 17^n  2 is a prime.
%C No more terms through 50000.  _Ryan Propper_, Dec 06 2008
%C a(12) > 2*10^5.  _Robert Price_, Oct 23 2014
%t Do[ f = 17^n  2; If[ PrimeQ[ f ], Print[ {n, f} ] ], {n,1,1000} ]
%Y Cf. A084714 = smallest prime of the form (2n1)^k  2, or 0 if no such number exists. Cf. A128472 = smallest prime of the form (2n1)^k  2 for k>(2n1), or 0 if no such number exists. Cf. A014224, A109080, A090669, A128455, A128457, A128458, A128460, A128461.
%K hard,more,nonn
%O 1,1
%A _Alexander Adamchuk_, Mar 14 2007
%E 2 more terms from _Stefan Steinerberger_, May 05 2007
%E Two more terms from _Ryan Propper_, Jan 16 2008
%E One more term from _Ryan Propper_, Dec 06 2008
