The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 11 |
| 3 | 1111 |
| 4 | 110 |
| 5 | 111111 |
| 6 | 1100 |
| 7 | 11111111 |
| 8 | 11110 |
| 9 | 1111111111 |
| 10 | 110111 |
| 11 | 111111111111 |
| 12 | 1100000 |
| 13 | 11111111111111 |
| 14 | 11110000 |
| 15 | 1111111111111111 |
| 16 | 110111110 |
| 17 | 111111111111111111 |
| 18 | 1100011110 |
| 19 | 11111111111111111111 |
| 20 | 11111111110 |
| 21 | 1111111111111111111111 |
| 22 | 110111000111 |
[1,11,11,1111,110,111111,1100,11111111,11110, 1111111111,110111,111111111111,1100000, 11111111111111,11110000,1111111111111111, 110111110,111111111111111111,1100011110, 11111111111111111111,11111111110, 1111111111111111111111,110111000111] |