Data:9 16/HOMFLYPT Polynomial

Failed to parse (syntax error): {\displaystyle z^6 a^{-6} +z^6 a^{-8} +5 z^4 a^{-6} +3 z^4 a^{-8} -z^4 a^{-10} }+8 z^2 a^{-6} -2 z^2 a^{-10} }+4 a^{-6} -3 a^{-8} }