758400domain: NAppears in sequencesExpansion of log(1+sinh(x)*cosh(x)).at n=9A009358arctan(cos(x)*sin(x))=x-6/3!*x^3+120/5!*x^5-7056/7!*x^7+758400/9!*x^9...at n=4A012475E.g.f.: log(sech(x)+sinh(x))=x-2/2!*x^2+6/3!*x^3-20/4!*x^4+120/5!*x^5...at n=9A013206