a(n) = Sum_{d|n, gcd(d,n/d)=1} d^d.

A362636

a(n) = Sum_{d|n, gcd(d,n/d)=1} d^d.

Terms

    a(0) =1a(1) =5a(2) =28a(3) =257a(4) =3126a(5) =46688a(6) =823544a(7) =16777217a(8) =387420490a(9) =10000003130a(10) =285311670612

External references