q 9 / 2 − 4 q 7 / 2 + 10 q 5 / 2 − 18 q 3 / 2 + 23 q − 28 q + 27 q 3 / 2 − 24 q 5 / 2 + 18 q 7 / 2 − 10 q 9 / 2 + 4 q 11 / 2 − 1 q 13 / 2 {\displaystyle q^{9/2}-4q^{7/2}+10q^{5/2}-18q^{3/2}+23{\sqrt {q}}-{\frac {28}{\sqrt {q}}}+{\frac {27}{q^{3/2}}}-{\frac {24}{q^{5/2}}}+{\frac {18}{q^{7/2}}}-{\frac {10}{q^{9/2}}}+{\frac {4}{q^{11/2}}}-{\frac {1}{q^{13/2}}}}
