Data:K12n866/HOMFLYPT Polynomial

Failed to parse (syntax error): {\displaystyle z^8-a^2 z^6-z^6}{a^2}+ $Failed^{-1} +5 z^6-3 a^2 z^4-2 z^4}{a^2}+ $Failed^{-1} +10 z^4-4 a^2 z^2-2 z^2}{a^2}- $Failed^{-1} -z^2}{a^4}+ $Failed^{-1} +8 z^2-a^2-1}{a^2}+ $Failed^{-1} +3}