Data:K11a248/HOMFLYPT Polynomial

[math]\displaystyle{ -a^2 z^8+2 a^4 z^6-5 a^2 z^6+z^6-a^6 z^4+6 a^4 z^4-10 a^2 z^4+3 z^4-a^6 z^2+5 a^4 z^2-7 a^2 z^2+3 z^2+1 }[/math]