293期：02,03,04,05,08,09,12,14,16,21,24,27,29,30,33,34,38,40,41,42,44,46,47,49··（共半数）开09准
294期：01,03,04,06,07,08,09,10,15,18,20,21,23,28,29,30,32,37,38,42,46,47,48,49··（共半数）开47准
295期：02,04,07,09,11,12,13,15,16,17,19,20,21,22,23,29,32,35,36,39,42,43,45,49··（共半数）开28错
296期：01,02,05,10,11,12,13,15,17,18,20,24,25,28,32,33,36,37,38,41,42,43,44,46··（共半数）开26错
297期：01,02,04,10,11,13,14,15,20,21,23,26,28,29,30,34,35,36,38,41,42,44,45,46··（共半数）开？？！