299期：02,03,06,09,15,16,17,20,21,23,24,25,27,28,29,31,32,33,34,37,39,41,42,45,46,47,48,49··（共半数）开48准
300期：01,03,04,07,08,13,15,17,19,21,22,23,24,26,27,29,30,34,35,36,37,40,41,42,44,45,47,48··（共半数）开16错
301期：02,05,08,11,12,14,15,16,17,19,20,21,24,25,26,28,29,30,31,33,34,35,36,37,39,42,45,47··（共半数）开？？！