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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 101 |
| 3 | 1111 |
| 4 | 11011 |
| 5 | 111111 |
| 6 | 1110001 |
| 7 | 11111111 |
| 8 | 111101001 |
| 9 | 1111111111 |
| 10 | 11111001101 |
| 11 | 111111111111 |
| 12 | 1111110010001 |
| 13 | 11111111101111 |
| 14 | 111111100011111 |
| 15 | 1111111111000101 |
| 16 | 11111111011111011 |
| 17 | 111111111110110101 |
| 18 | 1111111110001101011 |
| 19 | 11111111111101010101 |
[1,11,101,1111,11011,111111,1110001,11111111, 111101001,1111111111,11111001101,111111111111, 1111110010001,11111111101111,111111100011111, 1111111111000101,11111111011111011, 111111111110110101,1111111110001101011, 11111111111101010101] |