tan(arcsin(x)*arcsin(x))=2/2!*x^2+8/4!*x^4+368/6!*x^6+18048/8!*x^8...

A012342

tan(arcsin(x)*arcsin(x))=2/2!*x^2+8/4!*x^4+368/6!*x^6+18048/8!*x^8...

Terms

    a(0) =0a(1) =2a(2) =8a(3) =368a(4) =18048a(5) =1827072a(6) =253363200a(7) =50403563520

External references