First numbers that belong to both sets:
1,
2,
4,
7,
8,
11,
22,
44,
55,
88,
121,
131,
151,
161,
171,
181,
191,
242,
262,
292,
313,
333,
434,
454,
484,
494,
505,
515,
535,
545,
555,
565,
575,
595,
626,
656,
666,
696,
707,
727,
737,
747,
757,
767,
787,
818,
838,
868,
878,
919,
929,
939,
949,
959,
979,
1001,
1221,
1441,
1881,
2002,
2332,
2442,
2552,
2882,
3003,
3113,
3223,
3333,
3553,
3773,
4004,
4114,
4334,
4664,
4884,
4994,
5005,
5665,
5995,
6006,
6226,
6446,
6556,
6666,
6776,
6996,
7117,
7337,
7557,
7777,
8008,
8228,
8558,
8668,
8778,
9119,
9229,
9449,
9669,
9779,
10101,
10201,
10301,
10401,
10501,
10601,
10901,
11111,
11211,
11411,
11611,
11711,
11811,
12121,
12221,
12421,
12521,
12621,
12721,
13031,
13431,
13531,
13831,
13931,
14041,
14341,
14441,
14641,
14941,
15051,
15251,
15451,
15551,
15751,
15851,
16061,
16261,
16361,
16461,
16561,
16661,
16761,
17271,
17371,
17871,
17971,
18381,
18481,
19091,
19291,
19391,
19591,
19691,
19791,
19891,
20102,
20202,
20302,
20402,
20502,
20602,
20802,
20902,
21012,
21112,
21312,
21412,
21612,
21812,
21912,
22222,
22422,
22522,
22822,
22922,
23032,
23332,
23432,
23832,
24142,
24242,
24342,
24442,
24842,
25352,
25552,
25852,
26062,
26162,
26862,
26962,
27372,
27472,
27572,
27772,
27872,
27972,
28082,
28382,
28682,
28882,
29092,
29192,
29392,
29692,
29892,
29992,
30003,
30303,
30403,
30703,
31213,
31513,
31913,
32223,
32323,
32423,
32623,
33133,
33533,
33733,
33833,
34043,
34143,
34243,
34343,
34443,
34943,
35453,
35553,
35653,
35953,
36163,
36263,
36363,
36563,
36863,
37173,
37273,
37573,
37673,
37873,
37973,
38083,
38383,
38683,
38983,
39193,
39493,
39793,
40104,
40204,
40404,
40604,
40804,
40904,
41214,
41414,
41614,
41914,
42024,
42224,
42324,
42524,
42624,
42824,
42924,
43134,
43234,
43334,
43534,
43734,
43834,
44144,
44444,
44544,
44844,
45054,
45254,
45354.
Some larger examples :
999616999,
999636999,
999656999,
999666999,
999696999,
999707999,
999767999,
999787999,
999797999,
999808999,
999818999,
999828999,
999848999,
999858999,
999898999,
999909999,
999919999,
999949999,
999989999,
999999999.