arcsin(arcsin(tan(x)))=x+4/3!*x^3+84/5!*x^5+4488/7!*x^7+458448/9!*x^9...

A012076

arcsin(arcsin(tan(x)))=x+4/3!*x^3+84/5!*x^5+4488/7!*x^7+458448/9!*x^9...

Terms

    a(0) =1a(1) =4a(2) =84a(3) =4488a(4) =458448a(5) =76530048a(6) =18958160064

External references