Data:K12a419/HOMFLYPT Polynomial
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[math]\displaystyle{ -z^8 a^{-2} -3 z^6 a^{-2} +2 z^6 a^{-4} +2 z^6-a^2 z^4-4 z^4 a^{-2} +4 z^4 a^{-4} -z^4 a^{-6} +4 z^4-a^2 z^2-3 z^2 a^{-2} +2 z^2 a^{-4} -z^2 a^{-6} +z^2+a^2- a^{-2} + a^{-4} }[/math]