Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #22 Jul 07 2024 02:59:13
%S 2,5,37,41,317,541,2521
%N Primes p such that 3^p - 2 is prime.
%C a(8) > 1180181, if it exists (based on the data at A014224). - _Amiram Eldar_, Jul 07 2024
%F a(n) = prime(A089919(n)). - _Amiram Eldar_, Jul 07 2024
%t f[n_]:=3^n-2; lst={};Do[p=Prime[n];If[PrimeQ[f[p]],Print[p];AppendTo[lst,p]],{n,7!}];lst (* _Vladimir Joseph Stephan Orlovsky_, Jul 17 2009 *)
%Y Subsequence of prime terms of A014224.
%Y Cf. A086214, A089919.
%K nonn,hard,more
%O 1,1
%A _Cino Hilliard_, Aug 28 2003
%E a(7) from _Jorge Coveiro_, Apr 10 2004