%N Numbers n such that 2*29^n + 1 is prime.
%C Primes found and proved by PrimeForm. No more terms up to 20000.
%o (PARI) is(n)=ispseudoprime(2*29^n+1) \\ _Charles R Greathouse IV_, Jun 06 2017
%Y Cf. A141798.
%A _Rick L. Shepherd_, Jul 08 2008