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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 101 |
| 3 | 1101 |
| 4 | 11110 |
| 5 | 111110 |
| 6 | 1111110 |
| 7 | 11111110 |
| 8 | 111111110 |
| 9 | 1111111110 |
| 10 | 11111111110 |
| 11 | 111111111110 |
| 12 | 1111111111110 |
| 13 | 11111111111110 |
| 14 | 111111111111110 |
| 15 | 1111111111111110 |
| 16 | 11111111111111110 |
| 17 | 111111111111111110 |
| 18 | 1111111111111111110 |
| 19 | 11111111111111111110 |
[1,10,101,1101,11110,111110,1111110,11111110, 111111110,1111111110,11111111110,111111111110, 1111111111110,11111111111110,111111111111110, 1111111111111110,11111111111111110, 111111111111111110,1111111111111111110, 11111111111111111110] |