属于这两组的第一个数字:
171,252,414,828,1010,1212,1818,2020,2424,3030,3636,4040,4848,5050,5454,6060,7070,7272,8080,9090,10101,13131,20202,23232,26262,30303,39393,40404,43434,46464,50505,56565,60606,69696,70707,73737,80808,86868,90909,101010,121212,161616,181818,202020,212121,242424,252525,272727,303030,343434,363636,404040,424242,434343,454545,484848,494949,505050,525252,545454,585858,606060,616161,636363,676767,686868,707070,727272,767676,808080,818181,848484,858585,868686,909090,949494,3535353,6161616,12121212,24242424,36363636,48484848,72727272,1010101010,2020202020,3030303030,4040404040,4545454545,5050505050,6060606060,7070707070,8080808080,9090909090.