15949529088domain: NAppears in sequencesProduct_{n>=1} (1 + a(n)*x^n/n!) = 1 + arctanh(x).at n=12A353821Product_{n>=1} 1 / (1 - a(n)*x^n/n!) = 1 + arctanh(x).at n=12A353928Product_{n>=1} 1 / (1 - x^n)^(a(n)/n!) = 1 + arctanh(x).at n=12A354118Product_{n>=1} (1 + x^n)^(a(n)/n!) = 1 + arctanh(x).at n=12A354276