303期:〓〓半数01,02,03,05,09,14,17,20,22,23,24,25,27,28,29,32,34,36,38,39,40,43,44,47》开38准
304期:〓〓半数03,04,05,06,07,08,10,13,17,18,19,20,21,22,23,26,29,30,31,39,41,44,46,47》开17准
305期:〓〓半数01,03,05,08,10,11,12,14,17,18,25,26,27,30,31,34,39,40,41,42,43,47,48,49》开32错
306期:〓〓半数02,04,06,11,12,15,16,18,19,20,22,23,24,25,27,28,32,33,35,39,42,45,48,49》开08错
307期:〓〓半数01,02,04,05,06,09,10,11,12,17,18,19,22,23,28,29,33,34,35,36,37,38,40,44》开？？