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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 101 |
| 3 | 1011 |
| 4 | 10101 |
| 5 | 101011 |
| 6 | 1010101 |
| 7 | 10101011 |
| 8 | 101010101 |
| 9 | 1010101011 |
| 10 | 10101010101 |
| 11 | 101010101011 |
| 12 | 1010101010101 |
| 13 | 10111010101011 |
| 14 | 100100101010101 |
| 15 | 1111111010101011 |
| 16 | 11111100101010101 |
| 17 | 111110101010101011 |
| 18 | 1111011110101010101 |
| 19 | 11110011011110101011 |
[1,11,101,1011,10101,101011,1010101,10101011, 101010101,1010101011,10101010101,101010101011, 1010101010101,10111010101011,100100101010101, 1111111010101011,11111100101010101, 111110101010101011,1111011110101010101, 11110011011110101011] |