Data:L11n401/HOMFLYPT Polynomial

[math]\displaystyle{ -z^6+a^2 z^4+2 z^4 a^{-2} -2 z^4-2 a^2 z^2+3 z^2 a^{-2} -z^2 a^{-4} +2 a^4-7 a^2+ a^{-2} - a^{-4} +5+2 a^4 z^{-2} -5 a^2 z^{-2} - a^{-2} z^{-2} +4 z^{-2} }[/math]