Smallest prime p such that the infinite sequence {p, p'=2p-1, p''=2p'-1, ...} begins with a string of exactly n primes.
A064812
Smallest prime p such that the infinite sequence {p, p'=2p-1, p''=2p'-1, ...} begins with a string of exactly n primes.
Terms
- a(0) =5a(1) =3a(2) =2a(3) =2131a(4) =1531a(5) =33301a(6) =16651a(7) =15514861a(8) =857095381a(9) =205528443121
External references
- oeis: A064812