310期：01,07,08,09,10,11,12,14,15,16,17,18,19,20,22,26,31,32,34,35,36,41,42,43··（共半数）开16准
311期：01,07,08,13,16,19,20,21,23,24,25,27,28,30,36,37,38,39,40,41,44,45,46,47··（共半数）开37准
312期：02,05,06,07,09,10,17,18,19,20,23,24,25,29,30,31,34,36,37,42,43,45,48,49··（共半数）开14错
313期：01,09,10,11,13,14,15,20,21,23,24,26,27,28,32,33,34,35,37,38,43,44,46,49··（共半数）开38准
314期：02,04,06,10,11,13,14,16,18,20,21,23,26,27,29,32,34,35,41,44,46,47,48,49··（共半数）开23准
315期：01,02,03,05,07,16,18,19,26,27,28,30,32,33,34,37,38,40,42,43,44,46,47,48··（共半数）开04错
316期：05,08,09,10,11,13,15,17,18,20,23,24,25,28,30,31,32,34,36,38,42,45,47,49··（共半数）开？？！