Data:K12n521/HOMFLYPT Polynomial
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[math]\displaystyle{ -z^8 a^{-2} -5 z^6 a^{-2} +z^6 a^{-4} +2 z^6-a^2 z^4-8 z^4 a^{-2} +4 z^4 a^{-4} +7 z^4-2 a^2 z^2-5 z^2 a^{-2} +3 z^2 a^{-4} -z^2 a^{-6} +5 z^2+1 }[/math]