Data:10 121/HOMFLYPT Polynomial

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