a(n) = Sum_{d|n} sigma_d(d)^(n/d).

A359053

a(n) = Sum_{d|n} sigma_d(d)^(n/d).

Terms

    a(0) =1a(1) =6a(2) =29a(3) =299a(4) =3127a(5) =48360a(6) =823545a(7) =16918164a(8) =387462126a(9) =10019541652a(10) =285311670613

External references