Data:L11a306/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 a^{13} (-z)-a^{13} z^{-1} +4 a^{11} z^3+8 a^{11} z+3 a^{11} z^{-1} -3 a^9 z^5-8 a^9 z^3-6 a^9 z-2 a^9 z^{-1} -3 a^7 z^5-8 a^7 z^3-5 a^7 z-a^5 z^5-2 a^5 z^3}