73616009805domain: NAppears in sequencesExpansion of e.g.f.: log(1+tan(x)*cosh(x)).at n=13A009375arctan(tanh(x)*cos(x))=x-7/3!*x^3+165/5!*x^5-10827/7!*x^7...at n=6A012689E.g.f. log(sech(x) + tan(x)).at n=13A013204