arcsin(arctan(tanh(x)))=x-3/3!*x^3+49/5!*x^5-2139/7!*x^7+181921/9!*x^9...

A012223

arcsin(arctan(tanh(x)))=x-3/3!*x^3+49/5!*x^5-2139/7!*x^7+181921/9!*x^9...

Terms

    a(0) =1a(1) =-3a(2) =49a(3) =-2139a(4) =181921a(5) =-25347539a(6) =5231635473

External references