a(n) = Sum_{d|n} d * sigma_d(d), where sigma_k(n) is the sum of the k-th powers of the divisors of n.
A344480
a(n) = Sum_{d|n} d * sigma_d(d), where sigma_k(n) is the sum of the k-th powers of the divisors of n.
Terms
- a(0) =1a(1) =11a(2) =85a(3) =1103a(4) =15631a(5) =284795a(6) =5764809a(7) =134745175a(8) =3486961642a(9) =100097682141
External references
- oeis: A344480