Primes of the form 1 + sigma(n)^3 + sigma(n)^6.
A259371
Primes of the form 1 + sigma(n)^3 + sigma(n)^6.
Terms
- a(0) =3a(1) =757a(2) =262657a(3) =64008001a(4) =46656216001a(5) =30841155073a(6) =729027001a(7) =46656216001a(8) =30841155073a(9) =225200075257a(10) =885843322057a(11) =46656216001a(13) =885843322057
External references
- oeis: A259371