arcsin(tan(arctanh(x)))=x+5/3!*x^3+129/5!*x^5+7965/7!*x^7+910785/9!*x^9...

A012176

arcsin(tan(arctanh(x)))=x+5/3!*x^3+129/5!*x^5+7965/7!*x^7+910785/9!*x^9...

Terms

    a(0) =1a(1) =5a(2) =129a(3) =7965a(4) =910785a(5) =168520725a(6) =46302986625

External references