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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 100 |
| 3 | 11 |
| 4 | 11000 |
| 5 | 111 |
| 6 | 1110000 |
| 7 | 1111 |
| 8 | 100100000 |
| 9 | 10011111 |
| 10 | 11001000000 |
| 11 | 1100111111 |
| 12 | 1100010000000 |
| 13 | 1111111 |
| 14 | 100100100000000 |
| 15 | 10011111111 |
| 16 | 11100001000000000 |
| 17 | 111100111111111 |
| 18 | 1010000010000000000 |
| 19 | 10110001111111111 |
| 20 | 110010000100000000000 |
[1,1,100,11,11000,111,1110000,1111,100100000, 10011111,11001000000,1100111111,1100010000000, 1111111,100100100000000,10011111111, 11100001000000000,111100111111111, 1010000010000000000,10110001111111111, 110010000100000000000] |