First numbers that belong to both sets:
1,
2,
3,
4,
5,
6,
7,
8,
9,
101,
121,
141,
161,
181,
212,
232,
252,
272,
292,
303,
323,
343,
363,
383,
414,
434,
454,
474,
494,
505,
525,
545,
565,
585,
616,
636,
656,
676,
696,
707,
727,
747,
767,
787,
818,
838,
858,
878,
898,
909,
929,
949,
969,
989,
10101,
10301,
10501,
10701,
10901,
12121,
12321,
12521,
12721,
12921,
14141,
14341,
14541,
14741,
14941,
16161,
16361,
16561,
16761,
16961,
18181,
18381,
18581,
18781,
18981,
21012,
21212,
21412,
21612,
21812,
23032,
23232,
23432,
23632,
23832,
25052,
25252,
25452,
25652,
25852,
27072,
27272,
27472,
27672,
27872,
29092,
29292,
29492,
29692,
29892,
30103,
30303,
30503,
30703,
30903,
32123,
32323,
32523,
32723,
32923,
34143,
34343,
34543,
34743,
34943,
36163,
36363,
36563,
36763,
36963,
38183,
38383,
38583,
38783,
38983,
41014,
41214,
41414,
41614,
41814,
43034,
43234,
43434,
43634,
43834,
45054,
45254,
45454,
45654,
45854,
47074,
47274,
47474,
47674,
47874,
49094,
49294,
49494,
49694,
49894,
50105,
50305,
50505,
50705,
50905,
52125,
52325,
52525,
52725,
52925,
54145,
54345,
54545,
54745,
54945,
56165,
56365,
56565,
56765,
56965,
58185,
58385,
58585,
58785,
58985,
61016,
61216,
61416,
61616,
61816,
63036,
63236,
63436,
63636,
63836,
65056,
65256,
65456,
65656,
65856,
67076,
67276,
67476,
67676,
67876,
69096,
69296,
69496,
69696,
69896,
70107,
70307,
70507,
70707,
70907,
72127,
72327,
72527,
72727,
72927,
74147,
74347,
74547,
74747,
74947,
76167,
76367,
76567,
76767,
76967,
78187,
78387,
78587,
78787,
78987,
81018,
81218,
81418,
81618,
81818,
83038,
83238,
83438,
83638,
83838,
85058,
85258,
85458,
85658,
85858,
87078,
87278,
87478,
87678,
87878,
89098,
89298,
89498,
89698,
89898,
90109,
90309,
90509,
90709,
90909,
92129,
92329,
92529,
92729,
92929,
94149,
94349,
94549,
94749,
94949,
96169,
96369,
96569,
96769,
96969,
98189,
98389,
98589,
98789,
98989,
1010101.
Some larger examples :
989212989,
989232989,
989252989,
989272989,
989292989,
989414989,
989434989,
989454989,
989474989,
989494989,
989616989,
989636989,
989656989,
989676989,
989696989,
989818989,
989838989,
989858989,
989878989,
989898989.