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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 110 |
| 3 | 11 |
| 4 | 11100 |
| 5 | 111 |
| 6 | 1111000 |
| 7 | 1111 |
| 8 | 111110000 |
| 9 | 11111 |
| 10 | 11111100000 |
| 11 | 11100111111 |
| 12 | 1110111000000 |
| 13 | 11001111111 |
| 14 | 111111110000000 |
| 15 | 10000011111111 |
| 16 | 11011111100000000 |
| 17 | 1000100111111111 |
| 18 | 1101111111000000000 |
| 19 | 1110111001111111111 |
| 20 | 111110011110000000000 |
[1,1,110,11,11100,111,1111000,1111,111110000, 11111,11111100000,11100111111,1110111000000, 11001111111,111111110000000,10000011111111, 11011111100000000,1000100111111111, 1101111111000000000,1110111001111111111, 111110011110000000000] |