tanh(arctan(arcsin(x)))=x-3/3!*x^3+49/5!*x^5-1691/7!*x^7+108961/9!*x^9...

A012199

tanh(arctan(arcsin(x)))=x-3/3!*x^3+49/5!*x^5-1691/7!*x^7+108961/9!*x^9...

Terms

    a(0) =1a(1) =-3a(2) =49a(3) =-1691a(4) =108961a(5) =-10415699a(6) =1476822801a(7) =-274051642731

External references