Data:L11n431/HOMFLYPT Polynomial

[math]\displaystyle{ z^6 a^{-4} -z^4 a^{-2} +3 z^4 a^{-4} -2 z^4 a^{-6} +3 z^2 a^{-4} -3 z^2 a^{-6} +z^2 a^{-8} +2 a^{-2} -2 a^{-4} + a^{-2} z^{-2} -2 a^{-4} z^{-2} + a^{-6} z^{-2} }[/math]