The number of n-almost primes less than or equal to 10^n, starting with a(0)=1.
A116430
The number of n-almost primes less than or equal to 10^n, starting with a(0)=1.
Terms
- a(0) =1a(1) =4a(2) =34a(3) =247a(4) =1712a(5) =11185a(6) =68963a(7) =409849a(8) =2367507a(9) =13377156a(10) =74342563a(11) =407818620a(12) =2214357712a(13) =11926066887a(14) =63809981451a(15) =339576381990
External references
- oeis: A116430