q 15 / 2 − 3 q 13 / 2 + 7 q 11 / 2 − 11 q 9 / 2 + 15 q 7 / 2 − 18 q 5 / 2 + 17 q 3 / 2 − 16 q + 11 q − 7 q 3 / 2 + 3 q 5 / 2 − 1 q 7 / 2 {\displaystyle q^{15/2}-3q^{13/2}+7q^{11/2}-11q^{9/2}+15q^{7/2}-18q^{5/2}+17q^{3/2}-16{\sqrt {q}}+{\frac {11}{\sqrt {q}}}-{\frac {7}{q^{3/2}}}+{\frac {3}{q^{5/2}}}-{\frac {1}{q^{7/2}}}}
