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Primes p such that 3^p-2^(p+1) is also prime.
3

%I #7 May 25 2023 15:58:16

%S 3,5,7,31,59,97,2341,4817,9059,14327

%N Primes p such that 3^p-2^(p+1) is also prime.

%C The associated 3^p-2^(p+1) are in A162715.

%e The prime p=3 is in the sequence because 3^3-2^4=11 is prime.

%e The prime p=5 is in the sequence because 3^5-2^6=179 is prime.

%Y Cf. A162715.

%K nonn

%O 1,1

%A _Vincenzo Librandi_, Jul 11 2009

%E Definition simplified, one term added by _R. J. Mathar_, Aug 02 2009

%E a(8)-a(10) from _Michael S. Branicky_, May 25 2023