-175791616000domain: ZAppears in sequencesExpansion of e.g.f.: exp(arctan(x)-arctanh(x))=1-4/3!*x^3+160/6!*x^6-1440/7!*x^7...at n=15A013462Expansion of e.g.f. sin(arctan(x) - arctanh(x)) (odd powers only).at n=7A013463