W_{4,30}=1 + alpha*y^10 + (118755 - 10*alpha)*y^12 + (1151010 + 45*alpha)*y^14 + (12038625 - 120*alpha)*y^16 + (61752600 + 210*alpha)*y^18 + (195945750 - 252*alpha)*y^20 + (341403660 + 210*alpha)*y^22 + (312800670 - 120*alpha)*y^24 + (129570840 + 45*alpha)*y^26 + (18581895 - 10*alpha)*y^28 + (378018 + alpha)*y^30