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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 111 |
| 3 | 111 |
| 4 | 10111 |
| 5 | 11111 |
| 6 | 1011111 |
| 7 | 1111111 |
| 8 | 100011111 |
| 9 | 111111111 |
| 10 | 10001111111 |
| 11 | 11111111111 |
| 12 | 1000111111111 |
| 13 | 1111111111111 |
| 14 | 100011111111111 |
| 15 | 111111111111111 |
| 16 | 10000000111111111 |
| 17 | 11111111111111111 |
| 18 | 1000000011111111111 |
| 19 | 1001111111111111111 |
[1,1,111,111,10111,11111,1011111,1111111, 100011111,111111111,10001111111,11111111111, 1000111111111,1111111111111,100011111111111, 111111111111111,10000000111111111, 11111111111111111,1000000011111111111, 1001111111111111111] |