sin(sinh(x)*arctan(x))=2/2!*x^2-4/4!*x^4-10/6!*x^6-1160/8!*x^8...

A012555

sin(sinh(x)*arctan(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) =25258a(5) =861940a(6) =-503620962a(7) =179232404208

External references