340期：02,04,05,06,07,14,15,17,18,19,20,22,25,26,29,30,32,37,38,40,41,42,45,47··（共半数）开40准
341期：01,03,04,05,06,08,09,11,12,13,14,16,17,18,25,29,30,35,39,40,41,45,46,49··（共半数）开10错
342期：01,02,03,05,07,08,09,10,16,19,20,21,25,36,37,38,39,42,43,44,45,46,47,49··（共半数）开？？！