arcsinh(arcsin(tan(x)))=x+2/3!*x^3+24/5!*x^5+888/7!*x^7+68352/9!*x^9...

A012081

arcsinh(arcsin(tan(x)))=x+2/3!*x^3+24/5!*x^5+888/7!*x^7+68352/9!*x^9...

Terms

    a(0) =1a(1) =2a(2) =24a(3) =888a(4) =68352a(5) =8853888a(6) =1724221056a(7) =470304668928

External references