a(n) = n! * Sum_{k=1..n} sigma_3(k)/k.
A356323
a(n) = n! * Sum_{k=1..n} sigma_3(k)/k.
Terms
- a(0) =1a(1) =11a(2) =89a(3) =794a(4) =6994a(5) =72204a(6) =753108a(7) =8973264a(8) =111281616a(9) =1524322080a(10) =21601104480a(11) =340803192960
External references
- oeis: A356323