-60911593472domain: ZAppears in sequencesExpansion of log(1+sin(x)*cos(x)).at n=15A009338arctanh(cos(x)*sin(x))=x-2/3!*x^3-40/5!*x^5+208/7!*x^7+64640/9!*x^9...at n=7A012477Expansion of e.g.f. log(sec(x) + sin(x)).at n=15A013194