Data:L11a497/HOMFLYPT Polynomial

[math]\displaystyle{ a^4 z^4+3 a^4 z^2+2 a^4 z^{-2} +4 a^4-2 a^2 z^6-z^6 a^{-2} -9 a^2 z^4-4 z^4 a^{-2} -16 a^2 z^2-6 z^2 a^{-2} -5 a^2 z^{-2} - a^{-2} z^{-2} -14 a^2-4 a^{-2} +z^8+6 z^6+15 z^4+19 z^2+4 z^{-2} +14 }[/math]