Data:L8a2/HOMFLYPT Polynomial

From Knot Atlas

z⁵a⁻¹−2az³ + 3z³a⁻¹−z³a⁻³ + a³z−4az + 4za⁻¹−za⁻³ + a³z⁻¹−2az⁻¹ + 2a⁻¹z⁻¹−a⁻³z⁻¹