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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 101 |
| 3 | 1111 |
| 4 | 11011 |
| 5 | 111111 |
| 6 | 1110101 |
| 7 | 11111111 |
| 8 | 111101111 |
| 9 | 1111111111 |
| 10 | 11111010111 |
| 11 | 111111111111 |
| 12 | 1111110111011 |
| 13 | 11111111111111 |
| 14 | 111111101010101 |
| 15 | 1111111111111111 |
| 16 | 11111111011111111 |
| 17 | 111111111111111111 |
| 18 | 1111111110101111111 |
| 19 | 11111111111111111111 |
[1,11,101,1111,11011,111111,1110101,11111111, 111101111,1111111111,11111010111,111111111111, 1111110111011,11111111111111,111111101010101, 1111111111111111,11111111011111111, 111111111111111111,1111111110101111111, 11111111111111111111] |