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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 111 |
| 3 | 1111 |
| 4 | 11101 |
| 5 | 111011 |
| 6 | 1111101 |
| 7 | 11111011 |
| 8 | 111010101 |
| 9 | 1110111011 |
| 10 | 11111010001 |
| 11 | 111110101011 |
| 12 | 1110101010001 |
| 13 | 11101110001011 |
| 14 | 111110101010001 |
| 15 | 1111101010101011 |
| 16 | 11101010101010001 |
| 17 | 111011100010001011 |
| 18 | 1111101010101010001 |
| 19 | 11111010101000101011 |
[1,11,111,1111,11101,111011,1111101,11111011, 111010101,1110111011,11111010001,111110101011, 1110101010001,11101110001011,111110101010001, 1111101010101011,11101010101010001, 111011100010001011,1111101010101010001, 11111010101000101011] |