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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1111 |
| 3 | 110111111 |
| 4 | 1111011011 |
| 5 | 11000111111 |
| 6 | 110011011011 |
| 7 | 110111101111 |
| 8 | 111100011011 |
| 9 | 111101010101 |
| 10 | 111101111011 |
| 11 | 1010011111111 |
| 12 | 1010101001111 |
| 13 | 1010101101101 |
| 14 | 1010111100101 |
| 15 | 1011111001111 |
| 16 | 1100000111111 |
| 17 | 1100110011011 |
| 18 | 1111001011111 |
| 19 | 1111001101111 |
[1,1111,110111111,1111011011,11000111111, 110011011011,110111101111,111100011011, 111101010101,111101111011,1010011111111, 1010101001111,1010101101101,1010111100101, 1011111001111,1100000111111,1100110011011, 1111001011111,1111001101111] |