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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 111 |
| 3 | 1110 |
| 4 | 11101 |
| 5 | 111111 |
| 6 | 1111111 |
| 7 | 11111111 |
| 8 | 111110111 |
| 9 | 1111111000 |
| 10 | 11111110111 |
| 11 | 111111111111 |
| 12 | 1111111110000 |
| 13 | 11111111111111 |
| 14 | 111111111100011 |
| 15 | 1111111111111111 |
| 16 | 11111111101111111 |
| 17 | 111111111111111111 |
| 18 | 1111111111100111111 |
| 19 | 11111111111111111011 |
[1,10,111,1110,11101,111111,1111111,11111111, 111110111,1111111000,11111110111,111111111111, 1111111110000,11111111111111,111111111100011, 1111111111111111,11111111101111111, 111111111111111111,1111111111100111111, 11111111111111111011] |