a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 14.

A161010

a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 14.

Terms

    a(0) =1a(1) =8191a(2) =797161a(3) =33550336a(4) =305175781a(5) =6529545751a(6) =16148168401a(7) =137422176256a(8) =423644039001

External references