The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 2 |
| 5 | 5 |
| 6 | 3 |
| 7 | 7 |
| 8 | 4 |
| 9 | 2 |
| 10 | 5 |
| 11 | 11 |
| 12 | 3 |
| 13 | 13 |
| 14 | 7 |
| 15 | 6 |
| 16 | 2 |
| 17 | 17 |
| 18 | 3 |
| 19 | 19 |
| 20 | 5 |
| 21 | 7 |
| 22 | 11 |
[1,2,3,2,5,3,7,4,2,5,11,3,13,7,6,2,17,3,19,5,7,11] |