254期：大围：01,05,07,08,10,11,14,15,16,18,19,20,21,24,27,30,32,34,35,41,43,44,47,48（共半数）开27准
255期：大围：02,04,05,06,11,12,14,17,19,20,22,24,25,27,28,29,33,36,39,43,44,45,46,48（共半数）开30错
256期：大围：01,02,04,08,09,10,12,13,16,17,20,27,29,30,31,32,33,38,39,44,45,46,47,48（共半数）开？？√【？中？】