Data:8 6/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^2 a^6+a^6-z^4 a^4-2 z^2 a^4-a^4-z^4 a^2-2 z^2 a^2-a^2+z^2+2}