E=EllipticCurve([0,-20/9,0,5/3,-5/12]) Cremona Label = 75c1 J:=x*y+(5/3*x^2-5/2*x+1) Monodromy [5,5,311]-type x=(123)(4)(5), y=(12435), z=(14253) Reference: Birch's Article in LMS 200 (L.Schneps eds.) Designed by K.Hoshino and H.Nakamura (Okayama Univ.)