cosh(arctan(arcsin(x)))=1+1/2!*x^2-3/4!*x^4+69/6!*x^6-1159/8!*x^8...

A012201

cosh(arctan(arcsin(x)))=1+1/2!*x^2-3/4!*x^4+69/6!*x^6-1159/8!*x^8...

Terms

    a(0) =1a(1) =1a(2) =-3a(3) =69a(4) =-1159a(5) =115081a(6) =-3250827a(7) =1156388557a(8) =-12628752143

External references