246期：大头龙{{05,06,07,09,10,11,13,14,15,17,18,19,20,23,24,25,27,29,30,36,39,40,48,49}}开：30有
247期：大头龙{{01,03,04,08,09,13,14,15,18,20,21,22,24,27,30,37,40,41,42,43,44,45,48,49}}开：40有
248期：大头龙{{01,02,03,06,08,13,15,16,17,19,22,23,25,27,28,34,37,39,40,41,45,46,48,49}}开：20无
249期：大头龙{{01,03,04,05,06,07,09,10,13,16,17,19,20,21,23,26,34,35,37,39,40,42,45,48}}开：23有
250期：大头龙{{02,05,08,12,13,18,20,21,23,26,28,32,34,35,36,38,39,40,42,43,46,47,48,49}}开：？？