Data:K11a331/HOMFLYPT Polynomial

$- z 4 a 6 -2 z 2 a 6 -2 a 6 + z 6 a 4 + 3 z 4 a 4 + 6 z 2 a 4 + 4 a 4 + z 6 a 2 + z 4 a 2 - z 2 a 2 - a 2 -2 z 4 -3 z 2 -1 + z 2 a -2 + a -2$