arcsin(arctanh(x)*arctan(x))=2/2!*x^2+328/6!*x^6+1402272/10!*x^10...

A012729

arcsin(arctanh(x)*arctan(x))=2/2!*x^2+328/6!*x^6+1402272/10!*x^10...

Terms

    a(0) =2a(1) =328a(2) =1402272a(3) =34476662400

External references