a(n) is the least semiprime s such that the Sum_{semiprime i <= s} 1/i exceeds n.
A120055
a(n) is the least semiprime s such that the Sum_{semiprime i <= s} 1/i exceeds n.
Terms
- a(0) =4a(1) =35a(2) =871a(3) =43217a(4) =5296623a(5) =2011783478
External references
- oeis: A120055