− q 7 / 2 + 5 q 5 / 2 − 12 q 3 / 2 + 18 q − 24 q + 26 q 3 / 2 − 26 q 5 / 2 + 21 q 7 / 2 − 15 q 9 / 2 + 8 q 11 / 2 − 3 q 13 / 2 + 1 q 15 / 2 {\displaystyle -q^{7/2}+5q^{5/2}-12q^{3/2}+18{\sqrt {q}}-{\frac {24}{\sqrt {q}}}+{\frac {26}{q^{3/2}}}-{\frac {26}{q^{5/2}}}+{\frac {21}{q^{7/2}}}-{\frac {15}{q^{9/2}}}+{\frac {8}{q^{11/2}}}-{\frac {3}{q^{13/2}}}+{\frac {1}{q^{15/2}}}}
