Numbers of twin prime candidates in primorial interval of prime(n)# after elimination by prime factor prime(n-1).
A391072
Numbers of twin prime candidates in primorial interval of prime(n)# after elimination by prime factor prime(n-1).
Terms
- a(0) =0a(1) =2a(2) =5a(3) =21a(4) =165a(5) =1755a(6) =25245a(7) =423225a(8) =8709525a(9) =230613075a(10) =6655970475a(11) =230382461925
External references
- oeis: A391072