Data:8 18/Kauffman 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 3 a z^7+\frac{3 z^7}{a}+6 a^2 z^6+\frac{6 z^6}{a^2}+12 z^6+4 a^3 z^5+3 a z^5+\frac{3 z^5}{a}+\frac{4 z^5}{a^3}+a^4 z^4-9 a^2 z^4-\frac{9 z^4}{a^2}+\frac{z^4}{a^4}-20 z^4-4 a^3 z^3-9 a z^3-\frac{9 z^3}{a}-\frac{4 z^3}{a^3}+3 a^2 z^2+\frac{3 z^2}{a^2}+6 z^2+a z+\frac{z}{a}+a^2+\frac{1}{a^2}+3}