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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 100 |
| 3 | 111 |
| 4 | 11000 |
| 5 | 1111 |
| 6 | 1100000 |
| 7 | 111111 |
| 8 | 110000000 |
| 9 | 1111111111 |
| 10 | 100000000 |
| 11 | 110111111111 |
| 12 | 11100000000 |
| 13 | 11011111111111 |
| 14 | 1011000000000 |
| 15 | 1111001111111111 |
| 16 | 10001111000000000 |
| 17 | 111111111111111111 |
| 18 | 110000000000000 |
| 19 | 11110011111111111111 |
| 20 | 100111110000000000000 |
[1,11,100,111,11000,1111,1100000,111111,110000000, 1111111111,100000000,110111111111,11100000000, 11011111111111,1011000000000,1111001111111111, 10001111000000000,111111111111111111, 110000000000000,11110011111111111111, 100111110000000000000] |