a(n) = [x^n] Product_{k>=1} ((1 + n*x^k)/(1 - n*x^k))^k.
A300412
a(n) = [x^n] Product_{k>=1} ((1 + n*x^k)/(1 - n*x^k))^k.
Terms
- a(0) =1a(1) =2a(2) =16a(3) =144a(4) =1376a(5) =15800a(6) =210816a(7) =3333372a(8) =61688448a(9) =1318588146a(10) =32004369200a(11) =869282342632
External references
- oeis: A300412