277期：<<03,09,10,16,17,24,28,32,34,35,36,41,42,43,46,48>>开：48有
278期：<<03,05,16,17,23,24,28,29,30,32,37,41,43,45,46,49>>开：22无
279期：<<01,03,07,09,12,18,21,25,27,31,36,42,43,47,48,49>>开：27有
280期：<<06,10,11,14,16,17,19,21,28,31,32,33,34,46,47,48>>开：07无
281期：<<02,03,05,06,07,10,16,17,24,26,31,32,33,34,37,43>>开：88