arctanh(arcsin(arcsin(x)))=x+4/3!*x^3+92/5!*x^5+5160/7!*x^7+532880/9!*x^9...

A012071

arctanh(arcsin(arcsin(x)))=x+4/3!*x^3+92/5!*x^5+5160/7!*x^7+532880/9!*x^9...

Terms

    a(0) =1a(1) =4a(2) =92a(3) =5160a(4) =532880a(5) =87726464a(6) =21073486912

External references