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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 10 |
| 3 | 11 |
| 4 | 11100 |
| 5 | 11111 |
| 6 | 10000 |
| 7 | 11011111 |
| 8 | 10000000 |
| 9 | 111011111 |
| 10 | 10100000 |
| 11 | 111101111111 |
| 12 | 110010000000 |
| 13 | 111011111111 |
| 14 | 111010100000000 |
| 15 | 110001111111111 |
| 16 | 111111000000000 |
| 17 | 110000111111111111 |
| 18 | 110110000000000000 |
| 19 | 1000010111111111111 |
| 20 | 11001000000000000000 |
[1,1,10,11,11100,11111,10000,11011111,10000000, 111011111,10100000,111101111111,110010000000, 111011111111,111010100000000,110001111111111, 111111000000000,110000111111111111, 110110000000000000,1000010111111111111, 11001000000000000000] |