arcsin(tan(arcsinh(x)))=x+2/3!*x^3+24/5!*x^5+720/7!*x^7+48000/9!*x^9...

A012161

arcsin(tan(arcsinh(x)))=x+2/3!*x^3+24/5!*x^5+720/7!*x^7+48000/9!*x^9...

Terms

    a(0) =1a(1) =2a(2) =24a(3) =720a(4) =48000a(5) =4896000a(6) =804480000a(7) =175037491200

External references