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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 101 |
| 3 | 1011 |
| 4 | 111 |
| 5 | 101111 |
| 6 | 11111 |
| 7 | 10111111 |
| 8 | 1111111 |
| 9 | 1011111111 |
| 10 | 111111111 |
| 11 | 101111111111 |
| 12 | 11111111111 |
| 13 | 10111111111111 |
| 14 | 1111111111111 |
| 15 | 1011111111111111 |
| 16 | 111111111111111 |
| 17 | 101111111111111111 |
| 18 | 11111111111111111 |
| 19 | 10111111111111111111 |
| 20 | 1111111111111111111 |
[1,1,101,1011,111,101111,11111,10111111,1111111, 1011111111,111111111,101111111111,11111111111, 10111111111111,1111111111111,1011111111111111, 111111111111111,101111111111111111, 11111111111111111,10111111111111111111, 1111111111111111111] |