G.f. A(x) = Product_{n>=1} 1/(1 - 3^(n^2)*x^n).
A209495
G.f. A(x) = Product_{n>=1} 1/(1 - 3^(n^2)*x^n).
Terms
- a(0) =1a(1) =3a(2) =90a(3) =19953a(4) =43113141a(5) =847419543189
External references
- oeis: A209495
A209495
G.f. A(x) = Product_{n>=1} 1/(1 - 3^(n^2)*x^n).