q 9 / 2 − 7 q 9 / 2 − 3 q 7 / 2 + 12 q 7 / 2 + 6 q 5 / 2 − 16 q 5 / 2 − 12 q 3 / 2 + 18 q 3 / 2 − 1 q 13 / 2 + 3 q 11 / 2 + 15 q − 18 q {\displaystyle q^{9/2}-{\frac {7}{q^{9/2}}}-3q^{7/2}+{\frac {12}{q^{7/2}}}+6q^{5/2}-{\frac {16}{q^{5/2}}}-12q^{3/2}+{\frac {18}{q^{3/2}}}-{\frac {1}{q^{13/2}}}+{\frac {3}{q^{11/2}}}+15{\sqrt {q}}-{\frac {18}{\sqrt {q}}}}
