%I

%S 0,1,3,5,7,23,177,327,875,6645

%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.

%K hard,nonn

%O 1,3

%A _Rick L. Shepherd_, Jul 08 2008