299期：02,03,06,08,10,11,14,17,18,22,24,26,31,33,34,38,40,41,43,44,45,46,48,49··（共半数）开49准
300期：03,06,09,11,12,13,15,16,20,21,23,24,27,28,30,31,36,37,42,44,45,46,48,49··（共半数）开40错
301期：05,06,07,09,11,12,15,16,21,22,26,27,28,30,31,32,34,37,39,40,43,46,48,49··（共半数）开05准
302期：04,05,06,15,16,17,19,20,24,26,28,29,31,35,36,37,39,40,43,44,45,46,47,49··（共半数）开？？！