271期半数<<01,04,08,11,12,13,15,16,17,19,20,21,24,25,26,27,30,31,34,36,38,39,41,43,44,46,47,49>>】开26准
272期半数<<01,05,07,08,10,11,12,13,14,16,18,19,21,24,25,29,31,32,33,34,36,37,38,39,40,41,42,44>>】开23错
273期半数<<02,03,07,09,11,13,14,15,17,19,21,22,24,25,27,29,30,31,32,33,35,36,38,39,40,42,44,47>>】开？？