Number of 4-almost primes less than or equal to 10^n.
A114106
Number of 4-almost primes less than or equal to 10^n.
Terms
- a(0) =0a(1) =0a(2) =12a(3) =149a(4) =1712a(5) =18744a(6) =198062a(7) =2050696a(8) =20959322a(9) =212385942a(10) =2139236881a(11) =21454599814a(12) =214499908019
External references
- oeis: A114106