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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 1111 |
| 4 | 1111 |
| 5 | 101111 |
| 6 | 1111111 |
| 7 | 11111111 |
| 8 | 1111111 |
| 9 | 1111111111 |
| 10 | 11101111111 |
| 11 | 110111111111 |
| 12 | 1111111111111 |
| 13 | 1111111111111 |
| 14 | 101111111111111 |
| 15 | 111011111111111 |
| 16 | 1101111111111111 |
| 17 | 111111111111111111 |
| 18 | 11111011111111111 |
| 19 | 11011111111111111111 |
[1,1,11,1111,1111,101111,1111111,11111111,1111111, 1111111111,11101111111,110111111111,1111111111111, 1111111111111,101111111111111,111011111111111, 1101111111111111,111111111111111111, 11111011111111111,11011111111111111111] |