Data:K11a325/HOMFLYPT Polynomial

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