Data:K12n858/HOMFLYPT Polynomial

[math]\displaystyle{ z^2 a^8+a^8-3 z^4 a^6-6 z^2 a^6-3 a^6+2 z^6 a^4+7 z^4 a^4+9 z^2 a^4+3 a^4-3 z^4 a^2-5 z^2 a^2-a^2+z^2+1 }[/math]