305期半数<<01,02,03,04,06,07,08,09,11,15,16,17,24,25,26,28,29,30,32,34,35,37,39,40,41,42,48,49>>】开16准
306期半数<<01,04,07,08,09,11,15,18,20,21,22,24,27,28,30,31,32,33,35,37,39,42,43,44,45,47,48,49>>】开31准
307期半数<<01,06,09,10,11,16,18,19,21,22,23,24,26,27,29,31,32,34,36,38,40,41,44,45,46,47,48,49>>】开22准
308期半数<<01,03,05,07,10,11,12,14,15,17,19,22,27,28,29,31,35,38,39,40,41,43,44,45,46,47,48,49>>】开18错
309期半数<<06,07,09,10,11,14,18,19,21,22,23,26,27,29,30,31,32,34,37,38,40,41,42,44,45,46,47,48>>】开？？