304期:〓〓半数01,02,03,04,08,09,10,12,14,15,16,17,20,25,27,31,34,35,36,38,39,47,48,49》开48准
305期:〓〓半数01,03,08,09,11,12,14,15,17,19,21,22,24,29,30,31,32,33,36,37,39,46,47,49》开42错
306期:〓〓半数02,03,05,07,12,13,15,21,23,24,26,27,28,30,33,34,35,38,40,41,42,43,45,46》开17错
307期:〓〓半数01,02,04,06,08,11,13,15,16,18,19,20,23,26,28,29,32,34,36,40,43,45,46,49》开？？