The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 111 |
| 3 | 111 |
| 4 | 10111 |
| 5 | 111111 |
| 6 | 1111111 |
| 7 | 111111 |
| 8 | 111111111 |
| 9 | 1110111111 |
| 10 | 11011111111 |
| 11 | 111111111111 |
| 12 | 1100011111111 |
| 13 | 11111111111111 |
| 14 | 110001111111111 |
| 15 | 111111111111111 |
| 16 | 10001110111111111 |
| 17 | 111111111111111111 |
| 18 | 1111101111111111111 |
| 19 | 11111100111111111111 |
[1,1,111,111,10111,111111,1111111,111111, 111111111,1110111111,11011111111,111111111111, 1100011111111,11111111111111,110001111111111, 111111111111111,10001110111111111, 111111111111111111,1111101111111111111, 11111100111111111111] |