q 9 / 2 − 4 q 7 / 2 + 8 q 5 / 2 − 13 q 3 / 2 + 16 q − 18 q + 16 q 3 / 2 − 14 q 5 / 2 + 9 q 7 / 2 − 4 q 9 / 2 + 1 q 11 / 2 {\displaystyle q^{9/2}-4q^{7/2}+8q^{5/2}-13q^{3/2}+16{\sqrt {q}}-{\frac {18}{\sqrt {q}}}+{\frac {16}{q^{3/2}}}-{\frac {14}{q^{5/2}}}+{\frac {9}{q^{7/2}}}-{\frac {4}{q^{9/2}}}+{\frac {1}{q^{11/2}}}}
