arcsinh(arctanh(x)*sin(x))=2/2!*x^2+4/4!*x^4-10/6!*x^6+1160/8!*x^8...

A012722

arcsinh(arctanh(x)*sin(x))=2/2!*x^2+4/4!*x^4-10/6!*x^6+1160/8!*x^8...

Terms

    a(0) =2a(1) =4a(2) =-10a(3) =1160a(4) =267178a(5) =25749260a(6) =1675836318a(7) =292637394192

External references