Data:10 48/HOMFLYPT Polynomial

[math]\displaystyle{ z^8-a^2 z^6-z^6 a^{-2} +7 z^6-5 a^2 z^4-5 z^4 a^{-2} +18 z^4-8 a^2 z^2-8 z^2 a^{-2} +20 z^2-4 a^2-4 a^{-2} +9 }[/math]