Data:K11a226/HOMFLYPT Polynomial

[math]\displaystyle{ -a^8+2 z^2 a^6+a^6-z^4 a^4+z^2 a^4+a^4-2 z^4 a^2-2 z^2 a^2-a^2-z^4+1+z^2 a^{-2} }[/math]