230期:〓〓半数01,02,04,11,12,13,14,15,16,17,19,20,21,24,26,27,36,39,40,41,43,44,45,49》开16准
231期:〓〓半数02,07,09,12,16,17,18,19,21,22,23,24,25,29,32,33,34,37,39,40,41,44,47,48》开20错
232期:〓〓半数02,03,05,06,07,08,10,11,14,15,16,17,20,23,26,31,35,37,38,40,41,43,45,47》开？？