arctan(cos(x)-cosh(x))=238/6!*x^6-715682/10!*x^10+12212600398/14!*x^14...

A013473

arctan(cos(x)-cosh(x))=238/6!*x^6-715682/10!*x^10+12212600398/14!*x^14...

Terms

    a(0) =-2a(1) =238a(2) =-715682a(3) =12212600398

External references