q 9 / 2 − 5 q 7 / 2 + 10 q 5 / 2 − 15 q 3 / 2 + 20 q − 23 q + 22 q 3 / 2 − 19 q 5 / 2 + 13 q 7 / 2 − 8 q 9 / 2 + 3 q 11 / 2 − 1 q 13 / 2 {\displaystyle q^{9/2}-5q^{7/2}+10q^{5/2}-15q^{3/2}+20{\sqrt {q}}-{\frac {23}{\sqrt {q}}}+{\frac {22}{q^{3/2}}}-{\frac {19}{q^{5/2}}}+{\frac {13}{q^{7/2}}}-{\frac {8}{q^{9/2}}}+{\frac {3}{q^{11/2}}}-{\frac {1}{q^{13/2}}}}
