21 q 9 / 2 − 25 q 7 / 2 + 20 q 5 / 2 + q 3 / 2 − 16 q 3 / 2 − 1 q 19 / 2 + 3 q 17 / 2 − 8 q 15 / 2 + 13 q 13 / 2 − 21 q 11 / 2 − 5 q + 10 q {\displaystyle {\frac {21}{q^{9/2}}}-{\frac {25}{q^{7/2}}}+{\frac {20}{q^{5/2}}}+q^{3/2}-{\frac {16}{q^{3/2}}}-{\frac {1}{q^{19/2}}}+{\frac {3}{q^{17/2}}}-{\frac {8}{q^{15/2}}}+{\frac {13}{q^{13/2}}}-{\frac {21}{q^{11/2}}}-5{\sqrt {q}}+{\frac {10}{\sqrt {q}}}}
