The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 1 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 8 |
| 7 | 6 |
| 8 | 9 |
| 9 | 7 |
| 10 | 12 |
| 11 | 10 |
| 12 | 16 |
| 13 | 11 |
| 14 | 18 |
| 15 | 13 |
| 16 | 20 |
| 17 | 14 |
| 18 | 24 |
| 19 | 15 |
| 20 | 25 |
| 21 | 17 |
| 22 | 27 |
| 23 | 19 |
| 24 | 28 |
| 25 | 21 |
| 26 | 32 |
| 27 | 22 |
| 28 | 36 |
| 29 | 23 |
| 30 | 40 |
[2,1,3,4,5,8,6,9,7,12,10,16,11,18,13,20,14,24,15, 25,17,27,19,28,21,32,22,36,23,40] |