a(n) is a prime power and sum of all prime powers <= a(n) is A025475.
A068343
a(n) is a prime power and sum of all prime powers <= a(n) is A025475.
Terms
- a(0) =1a(1) =2111a(2) =43997a(3) =69499
External references
- oeis: A068343
A068343
a(n) is a prime power and sum of all prime powers <= a(n) is A025475.