Data:L9a29/HOMFLYPT Polynomial

$- z 5 a 7 -4 z 3 a 7 -4 z a 7 - a 7 z -1 + z 7 a 5 + 6 z 5 a 5 + 12 z 3 a 5 + 10 z a 5 + 3 a 5 z -1 - z 5 a 3 -5 z 3 a 3 -7 z a 3 -2 a 3 z -1$