q 13 / 2 − 3 q 11 / 2 + 5 q 9 / 2 − 6 q 7 / 2 + 7 q 5 / 2 − 7 q 3 / 2 + 5 q − 5 q + 2 q 3 / 2 − 1 q 5 / 2 {\displaystyle q^{13/2}-3q^{11/2}+5q^{9/2}-6q^{7/2}+7q^{5/2}-7q^{3/2}+5{\sqrt {q}}-{\frac {5}{\sqrt {q}}}+{\frac {2}{q^{3/2}}}-{\frac {1}{q^{5/2}}}}
