sec(tan(x)-arctan(x))=1+160/6!*x^6-1792/8!*x^8+484224/10!*x^10...

A013447

sec(tan(x)-arctan(x))=1+160/6!*x^6-1792/8!*x^8+484224/10!*x^10...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =160a(4) =-1792a(5) =484224a(6) =-15071232a(7) =6570936320a(8) =-461050544128

External references