a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 11.

Terms

a(0) =1a(1) =1023a(2) =29524a(3) =523776a(4) =2441406a(5) =30203052a(6) =47079208a(7) =268173312a(8) =581120892a(9) =2497558338a(10) =2593742460a(11) =15463962624a(12) =11488207654a(13) =48162029784a(14) =72080070744a(15) =137304735744a(16) =125999618778a(17) =594486672516a(18) =340614792100