88816domain: NAppears in sequencestan(exp(x)-cos(x)) = x + 2/2!*x^2 + 3/3!*x^3 + 24/4!*x^4 + 157/5!*x^5...at n=8A013312Expansion of (1+t^2+4*t^3+2*t^4+t^5+3*t^6)/((1-t)^2*(1-t^2)*(1-t^3)^2).at n=41A100779a(n) = (3^n-1)*(3^n+3)/3!.at n=6A275636