-6307domain: ZAppears in sequencescos(log(x+1)-tanh(x))=1-3/4!*x^4+40/5!*x^5-250/6!*x^6+1008/7!*x^7...at n=8A013286Expansion of (1-2x)/(1-x^2+x^3).at n=31A117363Expansion of e.g.f. 1 / (1 + x * (exp(x) - 1)).at n=7A375683