5 9 13 17 3 7 11 15 19
x x x x x x x x x
-x - --- - ------ - ---------- - --------------- + -- + ---- + -------- + ------------- + ------------------
120 362880 6227020800 355687428096000 6 5040 39916800 1307674368000 121645100408832000
$$\frac{x^{19}}{121645100408832000} - \frac{x^{17}}{355687428096000} + \frac{x^{15}}{1307674368000} - \frac{x^{13}}{6227020800} + \frac{x^{11}}{39916800} - \frac{x^{9}}{362880} + \frac{x^{7}}{5040} - \frac{x^{5}}{120} + \frac{x^{3}}{6} - x$$
-x - x^5/120 - x^9/362880 - x^13/6227020800 - x^17/355687428096000 + x^3/6 + x^7/5040 + x^11/39916800 + x^15/1307674368000 + x^19/121645100408832000