Number of twin prime pairs <= product of first n primes.
A000882
Number of twin prime pairs <= product of first n primes.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =15a(4) =69a(5) =468a(6) =4636a(7) =57453a(8) =896062a(9) =18463713a(10) =425177757a(11) =11997649372a(12) =385088898632
External references
- oeis: A000882