Data:K11a171/HOMFLYPT Polynomial

[math]\displaystyle{ -z^8 a^{-2} -4 z^6 a^{-2} +2 z^6 a^{-4} +z^6-5 z^4 a^{-2} +5 z^4 a^{-4} -z^4 a^{-6} +2 z^4+z^2 a^{-2} +2 z^2 a^{-4} -z^2 a^{-6} +4 a^{-2} -2 a^{-4} -1 }[/math]