First numbers that belong to both sets:
212,
424,
515,
636,
848,
1212,
1515,
2424,
3636,
4848,
13131,
17171,
21212,
23232,
26262,
27272,
39393,
42424,
46464,
51515,
53535,
57575,
63636,
69696,
84848,
121212,
131313,
151515,
161616,
171717,
242424,
262626,
313131,
323232,
353535,
363636,
373737,
393939,
484848,
626262,
646464,
717171,
727272,
737373,
757575,
767676,
939393,
969696,
2121212,
3131313,
4242424,
5151515,
6161616,
6262626,
6363636,
7171717,
8484848,
9393939,
12121212,
15151515,
24242424,
36363636,
48484848,
212121212,
424242424.