a(n) = n! * [x^n] Product_{k>=1} (1 + x^k)^(n/k).
A300187
a(n) = n! * [x^n] Product_{k>=1} (1 + x^k)^(n/k).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =39a(4) =488a(5) =7615a(6) =147024a(7) =3371137a(8) =89079808a(9) =2665537713a(10) =89142430400
External references
- oeis: A300187