arctanh(sin(arcsinh(x)))=x+4/5!*x^5-80/7!*x^7+4240/9!*x^9-342400/11!*x^11...

A012042

arctanh(sin(arcsinh(x)))=x+4/5!*x^5-80/7!*x^7+4240/9!*x^9-342400/11!*x^11...

Terms

    a(0) =1a(1) =0a(2) =4a(3) =-80a(4) =4240a(5) =-342400a(6) =41806400a(7) =-7093216000

External references