sec(arcsin(arcsin(x)))=1+1/2!*x^2+13/4!*x^4+469/6!*x^6+32985/8!*x^8...

A012073

sec(arcsin(arcsin(x)))=1+1/2!*x^2+13/4!*x^4+469/6!*x^6+32985/8!*x^8...

Terms

    a(0) =1a(1) =1a(2) =13a(3) =469a(4) =32985a(5) =3818601a(6) =658371429a(7) =158197312701

External references