q 15 / 2 − 4 q 13 / 2 + 9 q 11 / 2 − 14 q 9 / 2 + 19 q 7 / 2 − 22 q 5 / 2 + 21 q 3 / 2 − 19 q + 13 q − 8 q 3 / 2 + 3 q 5 / 2 − 1 q 7 / 2 {\displaystyle q^{15/2}-4q^{13/2}+9q^{11/2}-14q^{9/2}+19q^{7/2}-22q^{5/2}+21q^{3/2}-19{\sqrt {q}}+{\frac {13}{\sqrt {q}}}-{\frac {8}{q^{3/2}}}+{\frac {3}{q^{5/2}}}-{\frac {1}{q^{7/2}}}}
