q 23 / 2 − 4 q 21 / 2 + 8 q 19 / 2 − 12 q 17 / 2 + 15 q 15 / 2 − 15 q 13 / 2 + 15 q 11 / 2 − 12 q 9 / 2 + 7 q 7 / 2 − 5 q 5 / 2 + q 3 / 2 − q {\displaystyle q^{23/2}-4q^{21/2}+8q^{19/2}-12q^{17/2}+15q^{15/2}-15q^{13/2}+15q^{11/2}-12q^{9/2}+7q^{7/2}-5q^{5/2}+q^{3/2}-{\sqrt {q}}}
