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