Data:K12n811/HOMFLYPT Polynomial

Failed to parse (syntax error): {\displaystyle 2 z^6}{a^4}- $Failed^{-1} -2 z^4}{a^2}+ $Failed^{-1} +9 z^4}{a^4}- $Failed^{-1} -2 z^4}{a^6}- $Failed^{-1} -4 z^2}{a^2}+ $Failed^{-1} +13 z^2}{a^4}- $Failed^{-1} -5 z^2}{a^6}- $Failed^{-1} -1}{a^2}+ $Failed^{-1} +5}{a^4}- $Failed^{-1} -3}{a^6} $Failed^{-1} }