Expansion of (1 - x)*Sum_{k>=1} k*phi(k)*x^k/(1 - x^k), where phi() is the Euler totient function (A000010).
A292302
Expansion of (1 - x)*Sum_{k>=1} k*phi(k)*x^k/(1 - x^k), where phi() is the Euler totient function (A000010).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =4a(4) =10a(5) =0a(6) =22a(7) =0a(8) =18a(9) =2a(10) =48a(11) =-34a(12) =80a(13) =-28a(14) =18a(15) =24a(16) =102a(17) =-90a(18) =160a(19) =-112a(20) =70a(21) =32a(22) =174a(23) =-206a(24) =220a(25) =-50a(26) =76a(27) =-74a(28) =340a(29) =-372
External references
- oeis: A292302