Data:K11a290/HOMFLYPT Polynomial

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