arcsinh(arctan(arcsinh(x)))=x-4/3!*x^3+92/5!*x^5-5216/7!*x^7...

A012217

arcsinh(arctan(arcsinh(x)))=x-4/3!*x^3+92/5!*x^5-5216/7!*x^7...

Terms

    a(0) =1a(1) =-4a(2) =92a(3) =-5216a(4) =551504a(5) =-94170176a(6) =23756009664

External references