Data:K12n854/HOMFLYPT Polynomial

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle z^6}{a^2}+ $Failed^{-1} +2 z^6}{a^4}+ $Failed^{-1} +z^4}{a^2}+ $Failed^{-1} +6 z^4}{a^4}- $Failed^{-1} -2 z^4}{a^6}- $Failed^{-1} -z^4+7 z^2}{a^4}- $Failed^{-1} -2 z^2}{a^6}- $Failed^{-1} -z^2+2}{a^4}- $Failed^{-1} -1}{a^8} $Failed^{-1} }