Product_{k>=1} (1 + a(k)*x^k) = Sum_{k>=0} (k*x)^k.

A316083

Product_{k>=1} (1 + a(k)*x^k) = Sum_{k>=0} (k*x)^k.

Terms

    a(0) =1a(1) =4a(2) =23a(3) =233a(4) =2800a(5) =42832a(6) =763220a(7) =15761709a(8) =366711200a(9) =9537738596a(10) =273549419552

External references