G.f.: exp( Sum_{n>=1} A174476(n)*x^n/n ) where A174476(n) = Sum_{d|n} d^phi(d).
A174475
G.f.: exp( Sum_{n>=1} A174476(n)*x^n/n ) where A174476(n) = Sum_{d|n} d^phi(d).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =10a(5) =138a(6) =155a(7) =17102a(8) =18016a(9) =94540a(10) =154798a(11) =2358249307a(12) =2360592955
External references
- oeis: A174475