W_{3,84}=1 + alpha*y^21 + (334446840 - 21*alpha)*y^24 + (27251986272 + 210*alpha)*y^27 + (1595856832416 - 1330*alpha)*y^30 + (57941510353272 + 5985*alpha)*y^33 + (1352260881447840 - 20349*alpha)*y^36 + (20473083660798720 + 54264*alpha)*y^39 + (202449354096116160 - 116280*alpha)*y^42 + (1310283470243301120 + 203490*alpha)*y^45 + (5538707497101706200 - 293930*alpha)*y^48 + (15191881032059825184 + 352716*alpha)*y^51 + (26733400854085789248 - 352716*alpha)*y^54 + (29675352547018793664 + 293930*alpha)*y^57 + (20292322648045462560 - 203490*alpha)*y^60 + (8274112209487238400 + 116280*alpha)*y^63 + (1923875932140643320 - 54264*alpha)*y^66 + (239704140659316480 + 20349*alpha)*y^69 + (14629846917558600 - 5985*alpha)*y^72 + (381315149927712 + 1330*alpha)*y^75 + (3368733804576 - 210*alpha)*y^78 + (6274641968 + 21*alpha)*y^81 + (2368656 - alpha)*y^84