230期：01,02,03,08,10,13,14,15,16,17,21,23,24,27,30,31,32,35,36,38,40,42,45,47··（共半数）开16准
231期：01,02,04,05,07,08,09,14,15,21,22,23,26,32,34,35,38,39,41,44,45,47,48,49··（共半数）开20错
232期：01,07,11,12,13,15,16,17,18,20,21,23,26,29,31,32,34,35,36,38,39,40,44,47··（共半数）开42错
233期：02,03,04,05,10,11,12,15,17,18,24,26,27,28,33,34,37,42,43,45,46,47,48,49··（共半数）开？？！