Primes which are divisors of numbers of the form (2^phi(3^k) - 1)/3^k.
A152008
Primes which are divisors of numbers of the form (2^phi(3^k) - 1)/3^k.
Terms
- a(0) =7a(1) =19a(2) =73a(3) =163a(4) =487a(5) =1459a(6) =2593a(7) =17497a(8) =39367a(9) =52489a(10) =71119a(11) =80191a(12) =87211a(13) =97687a(14) =135433a(15) =139483a(16) =209953a(17) =262657a(18) =379081
External references
- oeis: A152008