cos(arcsinh(x)*cos(x))=1-1/2!*x^2+17/4!*x^4-385/6!*x^6+15073/8!*x^8...

A012639

cos(arcsinh(x)*cos(x))=1-1/2!*x^2+17/4!*x^4-385/6!*x^6+15073/8!*x^8...

Terms

    a(0) =1a(1) =-1a(2) =17a(3) =-385a(4) =15073a(5) =-1010945a(6) =101590513a(7) =-14396384769

External references