Data:K12a38/HOMFLYPT Polynomial

[math]\displaystyle{ -z^4 a^{-2} -z^4 a^{-4} -z^4 a^{-6} -z^4 a^{-8} -z^2 a^{-2} +z^2 a^{-4} +z^2 a^{-6} -z^2 a^{-8} +z^2 a^{-10} +z^2- a^{-2} + a^{-4} + a^{-6} - a^{-8} +1 }[/math]