Because Lee Hinde's thread is broken, I'm going to take a punt at what the question is :)
in a formset (inline, model, or just a plain one), the "initial" parameter to the instantiation of the form takes an list of dictionaries. Each element in the list is the initial data for _that_ row... so if you want 5 different part numbers, for example, do this.
formset = MyFormSet ( ..other params.., initial=[{'partno':10},{'partno':11},{'partno':12},{'partno':13},{'partno':14}] )