tanh(arcsinh(x)*arcsin(x))=2/2!*x^2-152/6!*x^6+227232/10!*x^10...

A012605

tanh(arcsinh(x)*arcsin(x))=2/2!*x^2-152/6!*x^6+227232/10!*x^10...

Terms

    a(0) =2a(1) =-152a(2) =227232a(3) =-795112320

External references