cosh(sin(arcsinh(x))) = 1+1/2!*x^2-7/4!*x^4+121/6!*x^6-4271/8!*x^8...

A012043

cosh(sin(arcsinh(x))) = 1+1/2!*x^2-7/4!*x^4+121/6!*x^6-4271/8!*x^8...

Terms

    a(0) =1a(1) =1a(2) =-7a(3) =121a(4) =-4271a(5) =262801a(6) =-25257079a(7) =3510517193a(8) =-667413187039

External references