The number of n-almost primes less than or equal to e^n, starting with a(0)=1.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =5a(5) =7a(6) =12a(7) =18a(8) =24a(9) =37a(10) =54a(11) =74a(12) =107a(13) =159a(14) =218a(15) =315a(16) =450a(17) =634a(18) =888a(19) =1269a(20) =1782a(21) =2496a(22) =3520a(23) =4933a(24) =6899a(25) =9681a(26) =13555a(27) =18888a(28) =26407a(29) =36855