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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 111 |
| 3 | 1111 |
| 4 | 10111 |
| 5 | 110111 |
| 6 | 1011111 |
| 7 | 11001111 |
| 8 | 101110111 |
| 9 | 1100010111 |
| 10 | 10101111111 |
| 11 | 110101001111 |
| 12 | 1010111110111 |
| 13 | 11010100010111 |
| 14 | 101111011111111 |
| 15 | 1101000111001111 |
| 16 | 10111011011110111 |
| 17 | 110100100000010111 |
| 18 | 1011001100111111111 |
| 19 | 11001011100011001111 |
[1,11,111,1111,10111,110111,1011111,11001111, 101110111,1100010111,10101111111,110101001111, 1010111110111,11010100010111,101111011111111, 1101000111001111,10111011011110111, 110100100000010111,1011001100111111111, 11001011100011001111] |