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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 101 |
| 2 | 1010 |
| 3 | 10100 |
| 4 | 10101 |
| 5 | 101000 |
| 6 | 101010 |
| 7 | 1010000 |
| 8 | 1010100 |
| 9 | 1010101 |
| 10 | 10100000 |
| 11 | 10101000 |
| 12 | 10101010 |
| 13 | 101000000 |
| 14 | 101010000 |
| 15 | 101010100 |
| 16 | 101010101 |
| 17 | 1010000000 |
| 18 | 1010000101 |
| 19 | 1010100000 |
| 20 | 1010101000 |
| 21 | 1010101010 |
| 22 | 10100000000 |
[0,101,1010,10100,10101,101000,101010,1010000, 1010100,1010101,10100000,10101000,10101010, 101000000,101010000,101010100,101010101, 1010000000,1010000101,1010100000,1010101000, 1010101010,10100000000] |