arcsin(arcsin(sinh(x)))=x+3/3!*x^3+49/5!*x^5+2187/7!*x^7+186337/9!*x^9...

A012100

arcsin(arcsin(sinh(x)))=x+3/3!*x^3+49/5!*x^5+2187/7!*x^7+186337/9!*x^9...

Terms

    a(0) =1a(1) =3a(2) =49a(3) =2187a(4) =186337a(5) =25929907a(6) =5355694161

External references