First numbers that belong to both sets:
1,
4,
5,
9,
25,
49,
51,
75,
76,
99,
125,
249,
251,
375,
376,
499,
501,
625,
749,
751,
875,
999,
1249,
3751,
4375,
4999,
5001,
5625,
6249,
8751,
9375,
9376,
9999,
18751,
31249,
40625,
49999,
50001,
59375,
68751,
81249,
90625,
99999,
109375,
109376,
218751,
281249,
390625,
499999,
500001,
609375,
718751,
781249,
890625,
2109375,
2890625,
4218751,
4999999,
5000001,
5781249,
7109375,
7890625,
9218751,
9999999.