a(n) is the smallest k > 15 such that the density of semiprimes in 1..k is 1/n.
A296653
a(n) is the smallest k > 15 such that the density of semiprimes in 1..k is 1/n.
Terms
- a(0) =18a(1) =26432a(2) =3066830a(3) =348933114a(4) =44690978122
External references
- oeis: A296653