245期:〓〓半数01,04,05,06,07,11,13,15,17,18,19,20,21,23,24,25,28,29,31,33,42,43,45,49》开18准
246期:〓〓半数01,03,04,05,07,08,09,14,19,20,22,25,29,30,34,35,36,38,39,42,43,45,46,49》开30准
247期:〓〓半数01,02,03,05,07,09,10,11,15,19,20,21,23,26,27,28,29,33,34,36,39,41,43,48》开？？