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