属于这两组的第一个数字:
5,6,7,22,55,77,88,101,111,141,151,161,181,191,212,222,252,262,303,313,323,333,343,353,373,383,404,414,434,444,454,464,494,505,525,535,565,575,585,606,616,636,646,656,686,696,717,727,757,767,777,797,828,838,848,878,888,909,919,949,959,989,999,1111,1221,1551,1661,1991,2222,2332,2552,2662,2772,3003,3223,3333,3443,3663,3773,4114,4334,4444,4664,4774,4884,5005,5115,5335,5445,5775,5885,6006,6446,6556,6776,6886,6996,7007,7117,7447,7557,7887,7997,8118,8558,8668,8888,8998,9119,9229,9339,9559,9669,9779,9999,10001,10101,10301,10501,10601,10701,10901,11111,11211,11311,11511,11711,11811,11911,12021,12121,12221,12421,12621,12821,13031,13231,13431,13531,13631,13831,14141,14341,14541,14741,14841,14941,15151,15351,15551,15751,15951,16061,16261,16461,16661,16761,16861,17071,17271,17471,17671,17871,18081,18181,18381,18581,18781,18981,19191,19391,19591,19791,19991,20002,20102,20302,20502,20702,20902,21012,21112,21212,21312,21712,21812,21912,22022,22222,22422,22622,22822,23032,23132,23632,23732,23832,23932,24142,24342,24542,24742,24942,25052,25552,25652,25752,25852,25952,26062,26262,26462,26662,26862,27072,27472,27572,27672,27772,27872,27972,28182,28282,28382,28582,28782,28982,29192,29392,29492,29592,29692,29792,29892,29992,30103,30303,30503,30703,30903,31013,31213,31413,31613,31813,32023,32223,32423,32623,32823,33133,33333,33533,33733,33933,34143,34343,34543,34743,34943,35053,35253,35353,35453,35653,35853,35953,36063,36263,36463,36663,36863,37173,37373,37573,37773,37873,37973,38183,38383. 一些较大的示例:
9970799,9971799,9972799,9973799,9974799,9975799,9976799,9977799,9978799,9979799,9990999,9991999,9992999,9993999,9994999,9995999,9996999,9997999,9998999,9999999.