− q 19 / 2 + 2 q 17 / 2 − 5 q 15 / 2 + 5 q 13 / 2 − 8 q 11 / 2 + 6 q 9 / 2 − 7 q 7 / 2 + 3 q 5 / 2 − 3 q 3 / 2 {\displaystyle -q^{19/2}+2q^{17/2}-5q^{15/2}+5q^{13/2}-8q^{11/2}+6q^{9/2}-7q^{7/2}+3q^{5/2}-3q^{3/2}}
