y = np.array([0.5050533250540701, 1.1207373784533172, 2.198184471902, 
    3.174620900339869, 4.290548247126004, 6.281622667807696, 
    11.073788414382639, 23.24847977054601, 32.12046230136718, 
    44.036117671229206, 54.009003143831116, 102.7077685684846, 
    185.72880217806673, 256.1218314554581, 301.97120103079675])
How to force zero interception in linear regression?