a(n) = Sum_{k=1..n} sigma_n(k) * floor(n/k).
A356046
a(n) = Sum_{k=1..n} sigma_n(k) * floor(n/k).
Terms
- a(0) =1a(1) =7a(2) =40a(3) =393a(4) =4498a(5) =68898a(6) =1205205a(7) =24830617a(8) =574911611a(9) =14936215765a(10) =427782762142
External references
- oeis: A356046