q 17 / 2 − 2 q 15 / 2 + 4 q 13 / 2 − 6 q 11 / 2 + 7 q 9 / 2 − 7 q 7 / 2 + 5 q 5 / 2 − 5 q 3 / 2 + 2 q − 1 q {\displaystyle q^{17/2}-2q^{15/2}+4q^{13/2}-6q^{11/2}+7q^{9/2}-7q^{7/2}+5q^{5/2}-5q^{3/2}+2{\sqrt {q}}-{\frac {1}{\sqrt {q}}}}
