G.f.: x * Product_{k>=1} 1/(1 - k^k*x^k)^(a(k)/k).
A308228
G.f.: x * Product_{k>=1} 1/(1 - k^k*x^k)^(a(k)/k).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =30a(4) =1956a(5) =1224510a(6) =9523018859
External references
- oeis: A308228
A308228
G.f.: x * Product_{k>=1} 1/(1 - k^k*x^k)^(a(k)/k).