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%I #14 Sep 08 2022 08:45:28
%S 3,6,8,12,14,16,17,19,28,38,47,52,64,101,274
%N Numbers n such that 2^n+5^n is semiprime.
%o (Magma)IsSemiprime:=func< n|&+[ k[2]: k in Factorization(n)] eq 2 >;[ n: n in [2..100]|IsSemiprime(2^n+5^n)]; // _Vincenzo Librandi_, Dec 16 2010
%Y Cf. A074600 (2^n + 5^n), A094475 (Primes of form 2^n+5^n).
%K nonn,easy
%O 1,1
%A _Zak Seidov_, Oct 19 2006
%E a(13), a(14) from _D. S. McNeil_, Dec 20 2010
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