275期：大头龙{{01,02,03,04,05,06,08,10,11,12,15,16,18,21,24,25,27,30,31,38,39,42,44,48}}开：24有
276期：大头龙{{04,09,10,11,12,14,15,18,22,23,24,25,26,27,30,32,34,39,40,41,42,43,45,46}}开：43有
277期：大头龙{{01,03,04,08,09,10,11,17,20,21,22,27,29,31,33,34,36,37,38,39,42,43,44,46}}开：48无
278期：大头龙{{02,06,07,08,09,11,14,15,16,21,22,24,25,26,27,32,34,36,37,42,43,45,48,49}}开：22有
279期：大头龙{{01,05,06,09,10,11,12,14,17,19,21,23,24,27,31,33,34,36,38,41,43,45,46,49}}开：27有
280期：大头龙{{01,03,04,07,08,11,12,17,19,20,21,22,23,24,30,32,33,35,36,38,40,44,47,49}}开：？？