arctanh(sinh(x)*cos(x))=x-20/5!*x^5-560/7!*x^7-7920/9!*x^9...

A012568

arctanh(sinh(x)*cos(x))=x-20/5!*x^5-560/7!*x^7-7920/9!*x^9...

Terms

    a(0) =1a(1) =0a(2) =-20a(3) =-560a(4) =-7920a(5) =1034880a(6) =172569280a(7) =12339608320

External references