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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 100 |
| 4 | 1001 |
| 5 | 10010 |
| 6 | 100101 |
| 7 | 1001010 |
| 8 | 10010101 |
| 9 | 100101011 |
| 10 | 1001010111 |
| 11 | 10010101110 |
| 12 | 100101011101 |
| 13 | 1001010111010 |
| 14 | 10010101110101 |
| 15 | 100101011101011 |
| 16 | 1001010111010111 |
| 17 | 10010101110101110 |
| 18 | 100101011101011101 |
| 19 | 1001010111010111010 |
| 20 | 10010101110101110101 |
| 21 | 100101011101011101011 |
[1,10,100,1001,10010,100101,1001010,10010101, 100101011,1001010111,10010101110,100101011101, 1001010111010,10010101110101,100101011101011, 1001010111010111,10010101110101110, 100101011101011101,1001010111010111010, 10010101110101110101,100101011101011101011] |