Data:5 2/Kauffman Polynomial

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