The number of n-almost primes less than or equal to 8^n, starting with a(0)=1.
A116428
The number of n-almost primes less than or equal to 8^n, starting with a(0)=1.
Terms
- a(0) =1a(1) =4a(2) =22a(3) =125a(4) =669a(5) =3410a(6) =16677a(7) =78369a(8) =359110a(9) =1612613a(10) =7133274a(11) =31185350a(12) =135062165a(13) =580556958a(14) =2480278767a(15) =10542976739a(16) =44626102826a(17) =188215850830a(18) =791374442571
External references
- oeis: A116428