sec(arctan(x)*arcsin(x))=1+12/4!*x^4-120/6!*x^6+17808/8!*x^8...
A012442
sec(arctan(x)*arcsin(x))=1+12/4!*x^4-120/6!*x^6+17808/8!*x^8...
Terms
- a(0) =1a(1) =0a(2) =12a(3) =-120a(4) =17808a(5) =-962880a(6) =219945792a(7) =-31053369984
External references
- oeis: A012442