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