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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 111 |
| 3 | 1111 |
| 4 | 111 |
| 5 | 1111 |
| 6 | 1111111 |
| 7 | 1111111 |
| 8 | 11111111 |
| 9 | 1011111111 |
| 10 | 101111111 |
| 11 | 111011111111 |
| 12 | 1101011111111 |
| 13 | 11000111111111 |
| 14 | 110110111111111 |
| 15 | 1111101111111111 |
| 16 | 11010111111111 |
| 17 | 111001111111111 |
| 18 | 1111101011111111111 |
| 19 | 11111001111111111111 |
| 20 | 111110011111111111111 |
[1,1,111,1111,111,1111,1111111,1111111,11111111, 1011111111,101111111,111011111111,1101011111111, 11000111111111,110110111111111,1111101111111111, 11010111111111,111001111111111, 1111101011111111111,11111001111111111111, 111110011111111111111] |