241期:半数【《01,02,03,07,09,10,12,18,19,24,26,30,31,32,33,34,36,38,40,41,42,43,44,49》】开:49准
242期:半数【《02,04,05,06,07,09,10,14,16,18,19,20,21,22,28,30,35,38,39,40,42,47,48,49》】开:09准
243期:半数【《01,02,03,04,07,09,10,11,16,19,22,25,27,30,34,35,36,39,40,41,44,45,48,49》】开:21错
244期:半数【《01,03,04,05,12,15,17,18,19,20,21,22,24,26,27,28,31,32,37,39,40,41,47,48》】开:？？？？