%I #32 Aug 03 2014 14:27:53
%S 3,5,7,8,10,16,23,26,32,37,64,89,149,173,251,307,317,956,30197,46058
%N Numbers n such that 16^n + 1 is a semiprime.
%t Select[Range[37], PrimeOmega[16^# + 1] == 2 &] (* _Arkadiusz Wesolowski_, Dec 15 2011 *)
%Y Cf. A002590, A057182, A127317.
%K nonn
%O 1,1
%A _Arkadiusz Wesolowski_, Oct 19 2011