a(n) = sigma_n(n): sum of n-th powers of divisors of n.
A023887
a(n) = sigma_n(n): sum of n-th powers of divisors of n.
Terms
- a(0) =1a(1) =5a(2) =28a(3) =273a(4) =3126a(5) =47450a(6) =823544a(7) =16843009a(8) =387440173a(9) =10009766650a(10) =285311670612
External references
- oeis: A023887