Data:L10a137/HOMFLYPT Polynomial

[math]\displaystyle{ z^6 a^{-2} +z^6 a^{-4} +2 z^4 a^{-2} +3 z^4 a^{-4} -z^4 a^{-6} -z^4+3 z^2 a^{-4} -2 z^2 a^{-6} -z^2- a^{-4} +1+ a^{-2} z^{-2} -2 a^{-4} z^{-2} + a^{-6} z^{-2} }[/math]