sinh(arctan(arcsinh(x)))=x-2/3!*x^3+24/5!*x^5-664/7!*x^7+28416/9!*x^9...

A012216

sinh(arctan(arcsinh(x)))=x-2/3!*x^3+24/5!*x^5-664/7!*x^7+28416/9!*x^9...

Terms

    a(0) =1a(1) =-2a(2) =24a(3) =-664a(4) =28416a(5) =-942336a(6) =-260697984a(7) =165900454656

External references