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%I #20 Oct 26 2024 10:45:45
%S 6,2059,8388631,17179869218,576460752303423547,590295810358705651781,
%T 154742504910672534362390615,39614081257132168796771975263,
%U 664613997892457936451903530140172407,10633823966279326983230456482242756731,680564733841876926926749214863536423041
%N Semiprimes of the form 2^k + k.
%H Amiram Eldar, <a href="/A089535/b089535.txt">Table of n, a(n) for n = 1..26</a>
%F a(n) = 2^A085745(n) + A085745(n).
%t Select[Table[2^k+k,{k,200}],PrimeOmega[#]==2&] (* _Harvey P. Dale_, Aug 11 2024 *)
%Y Intersection of A001358 and A006127.
%Y Cf. A085745, A089536, A089537, 129962.
%K nonn
%O 1,1
%A _Ray Chandler_, Nov 08 2003
%E a(10)-a(11) from _Jinyuan Wang_, Jul 30 2021