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