1066281

Appears in sequences

• G.f.: A(x) = Product_{n>=1} 1/(1 - A007947(n)*x^n)^(1/n), where A007947(n) is the product of the distinct prime factors of n.at n=37A094947
• G.f. satisfies A(x) = 1 + x*(1 + x*A(x)^3)^4.at n=9A137958