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

A013446

cosh(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) =-30840832a(7) =7718963200

External references