First numbers that belong to both sets:
101,
181,
808,
818,
6969,
9696,
10101,
18181,
80808,
81818,
696969,
969696,
1010101,
1818181,
8080808,
8181818,
69696969,
96969696,
101010101,
181818181,
808080808,
818181818,
6969696969,
9696969696,
10101010101,
18181818181,
80808080808,
81818181818,
696969696969,
969696969696,
1010101010101,
1818181818181,
8080808080808,
8181818181818,
69696969696969,
96969696969696,
101010101010101,
181818181818181,
808080808080808,
818181818181818.