Least number X such that for each k in (0 to n-1), 2^k*X-1 and 2^k*X+1 are primes. That is, there are N twin primes, each the "double" of the previous.
A069179
Least number X such that for each k in (0 to n-1), 2^k*X-1 and 2^k*X+1 are primes. That is, there are N twin primes, each the "double" of the previous.
Terms
- a(0) =4a(1) =6a(2) =211050a(3) =253680a(4) =41887255410
External references
- oeis: A069179