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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1100 |
| 3 | 1110000 |
| 4 | 1111000000 |
| 5 | 1111100000000 |
| 6 | 1111110000000000 |
| 7 | 1111111000000000000 |
| 8 | 1111111100000000000000 |
| 9 | 1111111110000000000000000 |
| 10 | 1111111111000000000000000000 |
| 11 | 1111111111100000000000000000000 |
| 12 | 1111111111110000000000000000000000 |
[1,1100,1110000,1111000000,1111100000000, 1111110000000000,1111111000000000000, 1111111100000000000000,1111111110000000000000000, 1111111111000000000000000000, 1111111111100000000000000000000, 1111111111110000000000000000000000] |