− q 19 / 2 + 4 q 17 / 2 − 9 q 15 / 2 + 15 q 13 / 2 − 19 q 11 / 2 + 22 q 9 / 2 − 22 q 7 / 2 + 18 q 5 / 2 − 14 q 3 / 2 + 7 q − 4 q + 1 q 3 / 2 {\displaystyle -q^{19/2}+4q^{17/2}-9q^{15/2}+15q^{13/2}-19q^{11/2}+22q^{9/2}-22q^{7/2}+18q^{5/2}-14q^{3/2}+7{\sqrt {q}}-{\frac {4}{\sqrt {q}}}+{\frac {1}{q^{3/2}}}}
