The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 11 |
| 2 | 101 |
| 3 | 1001 |
| 4 | 10001 |
| 5 | 100001 |
| 6 | 1000001 |
| 7 | 10000001 |
| 8 | 100000001 |
| 9 | 1000000001 |
| 10 | 10000000001 |
| 11 | 100000000001 |
| 12 | 1000000000001 |
| 13 | 10000000000001 |
| 14 | 100000000000001 |
| 15 | 1000000000000001 |
| 16 | 10000000000000001 |
| 17 | 100000000000000001 |
[2,11,101,1001,10001,100001,1000001,10000001, 100000001,1000000001,10000000001,100000000001, 1000000000001,10000000000001,100000000000001, 1000000000000001,10000000000000001, 100000000000000001] |