Maximum of the smallest prime factors of (i^prime(n)-1)/(i-1), when i runs through all integers in [2, prime(n)].
A247216
Maximum of the smallest prime factors of (i^prime(n)-1)/(i-1), when i runs through all integers in [2, prime(n)].
Terms
- a(0) =3a(1) =13a(2) =31a(3) =55987a(4) =12207031a(5) =16148168401
External references
- oeis: A247216