Data:K11n80/HOMFLYPT Polynomial

[math]\displaystyle{ -a^8+2 z^2 a^6+a^6+3 z^2 a^4+3 a^4-z^6 a^2-6 z^4 a^2-9 z^2 a^2-5 a^2+z^4+4 z^2+3 }[/math]