249期：【06,08,09,18,20,24,30,32,33,42,44,45】开（23）√√
250期：【04,07,10,16,18,22,25,28,31,34,40,46】开（14）√√
251期：【07,08,10,19,20,22,23,32,34,42,44,46】开（30）√√
252期：【03,04,13,14,15,20,24,25,26,29,41,43】开（22）√√
253期：【01,08,10,13,15,25,30,34,37,38,46,49】开（16）√√
254期：【01,02,08,14,20,26,32,36,38,44,46,48】开（02）××
255期：【03,11,12,18,22,24,29,30,31,41,42,47】开（44）√√
256期：【03,04,09,15,16,25,27,30,34,37,47,49】开（？）