Expansion of 1/(1 - x - Sum_{k>=2} floor(1/omega(k))*x^k), where omega(k) is the number of distinct prime factors (A001221).

A280543

Expansion of 1/(1 - x - Sum_{k>=2} floor(1/omega(k))*x^k), where omega(k) is the number of distinct prime factors (A001221).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =16a(6) =31a(7) =62a(8) =123a(9) =244a(10) =483a(11) =958a(12) =1899a(13) =3765a(14) =7463a(15) =14794a(16) =29329a(17) =58141a(18) =115258a(19) =228486a(20) =452949a(21) =897922a(22) =1780031a(23) =3528716a(24) =6995293a(25) =13867402a(26) =27490602a(27) =54497104a(28) =108034531a(29) =214166610

External references