Data:L9a47/HOMFLYPT Polynomial

[math]\displaystyle{ -a^8+3 z^2 a^6+a^6 z^{-2} +3 a^6-2 z^4 a^4-4 z^2 a^4-2 a^4 z^{-2} -5 a^4-z^4 a^2+z^2 a^2+a^2 z^{-2} +3 a^2+z^2 }[/math]