L 3 M 14 + L ( M 10 − M 8 + 2 M 4 + 2 M 2 − 1 ) + L 2 ( − M 14 + 2 M 12 + 2 M 10 − M 6 + M 4 ) + 1 {\displaystyle L^{3}M^{14}+L\left(M^{10}-M^{8}+2M^{4}+2M^{2}-1\right)+L^{2}\left(-M^{14}+2M^{12}+2M^{10}-M^{6}+M^{4}\right)+1}
