− q 17 / 2 + 4 q 15 / 2 − 7 q 13 / 2 + 12 q 11 / 2 − 16 q 9 / 2 + 18 q 7 / 2 − 20 q 5 / 2 + 16 q 3 / 2 − 13 q + 8 q − 4 q 3 / 2 + 1 q 5 / 2 {\displaystyle -q^{17/2}+4q^{15/2}-7q^{13/2}+12q^{11/2}-16q^{9/2}+18q^{7/2}-20q^{5/2}+16q^{3/2}-13{\sqrt {q}}+{\frac {8}{\sqrt {q}}}-{\frac {4}{q^{3/2}}}+{\frac {1}{q^{5/2}}}}
