− 1 q + 1 q 3 / 2 − 1 q 5 / 2 − 1 q 9 / 2 {\displaystyle -{\frac {1}{\sqrt {q}}}+{\frac {1}{q^{3/2}}}-{\frac {1}{q^{5/2}}}-{\frac {1}{q^{9/2}}}}