− q 19 / 2 + 4 q 17 / 2 − 7 q 15 / 2 + 11 q 13 / 2 − 14 q 11 / 2 + 14 q 9 / 2 − 14 q 7 / 2 + 10 q 5 / 2 − 7 q 3 / 2 + 3 q − 1 q {\displaystyle -q^{19/2}+4q^{17/2}-7q^{15/2}+11q^{13/2}-14q^{11/2}+14q^{9/2}-14q^{7/2}+10q^{5/2}-7q^{3/2}+3{\sqrt {q}}-{\frac {1}{\sqrt {q}}}}
