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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 1011 |
| 4 | 1111 |
| 5 | 111 |
| 6 | 1111111 |
| 7 | 11001111 |
| 8 | 1111111 |
| 9 | 1110011111 |
| 10 | 10011111111 |
| 11 | 11000111111 |
| 12 | 110111111111 |
| 13 | 10010001111111 |
| 14 | 100101111111111 |
| 15 | 110100011111111 |
| 16 | 1011011111111111 |
| 17 | 101001000111111111 |
| 18 | 1001110111111111111 |
| 19 | 1110010001111111111 |
| 20 | 10011101111111111111 |
[1,1,11,1011,1111,111,1111111,11001111,1111111, 1110011111,10011111111,11000111111,110111111111, 10010001111111,100101111111111,110100011111111, 1011011111111111,101001000111111111, 1001110111111111111,1110010001111111111, 10011101111111111111] |