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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 101 |
| 3 | 11 |
| 4 | 11011 |
| 5 | 100111 |
| 6 | 1010111 |
| 7 | 1111 |
| 8 | 111101111 |
| 9 | 1110011111 |
| 10 | 11101011111 |
| 11 | 110000111111 |
| 12 | 1101110111111 |
| 13 | 10011001111111 |
| 14 | 101010101111111 |
| 15 | 11111111 |
| 16 | 11111111011111111 |
| 17 | 111111100111111111 |
| 18 | 1111111010111111111 |
| 19 | 11111100001111111111 |
| 20 | 111111011101111111111 |
[1,1,101,11,11011,100111,1010111,1111,111101111, 1110011111,11101011111,110000111111,1101110111111, 10011001111111,101010101111111,11111111, 11111111011111111,111111100111111111, 1111111010111111111,11111100001111111111, 111111011101111111111] |