− q 7 / 2 + 5 q 5 / 2 − 11 q 3 / 2 + 16 q − 21 q + 22 q 3 / 2 − 21 q 5 / 2 + 16 q 7 / 2 − 11 q 9 / 2 + 5 q 11 / 2 − 1 q 13 / 2 {\displaystyle -q^{7/2}+5q^{5/2}-11q^{3/2}+16{\sqrt {q}}-{\frac {21}{\sqrt {q}}}+{\frac {22}{q^{3/2}}}-{\frac {21}{q^{5/2}}}+{\frac {16}{q^{7/2}}}-{\frac {11}{q^{9/2}}}+{\frac {5}{q^{11/2}}}-{\frac {1}{q^{13/2}}}}
