− q 13 / 2 + 4 q 11 / 2 − 8 q 9 / 2 + 14 q 7 / 2 − 19 q 5 / 2 + 21 q 3 / 2 − 22 q + 18 q − 14 q 3 / 2 + 8 q 5 / 2 − 4 q 7 / 2 + 1 q 9 / 2 {\displaystyle -q^{13/2}+4q^{11/2}-8q^{9/2}+14q^{7/2}-19q^{5/2}+21q^{3/2}-22{\sqrt {q}}+{\frac {18}{\sqrt {q}}}-{\frac {14}{q^{3/2}}}+{\frac {8}{q^{5/2}}}-{\frac {4}{q^{7/2}}}+{\frac {1}{q^{9/2}}}}
