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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 11 |
| 3 | 111 |
| 4 | 1011 |
| 5 | 10111 |
| 6 | 101011 |
| 7 | 1010111 |
| 8 | 10101011 |
| 9 | 101010111 |
| 10 | 1010101011 |
| 11 | 10101010111 |
| 12 | 101010101011 |
| 13 | 1010101010111 |
| 14 | 10101010101011 |
| 15 | 101010101010111 |
| 16 | 1010101010101011 |
| 17 | 10101010101010111 |
| 18 | 101010101010101011 |
| 19 | 1010101010101010111 |
| 20 | 10101010101010101011 |
[1,11,11,111,1011,10111,101011,1010111,10101011, 101010111,1010101011,10101010111,101010101011, 1010101010111,10101010101011,101010101010111, 1010101010101011,10101010101010111, 101010101010101011,1010101010101010111, 10101010101010101011] |