The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 6 |
| 6 | 8 |
| 7 | 9 |
| 8 | 12 |
| 9 | 13 |
| 10 | 15 |
| 11 | 16 |
| 12 | 17 |
| 13 | 20 |
| 14 | 24 |
| 15 | 25 |
| 16 | 27 |
| 17 | 28 |
| 18 | 32 |
| 19 | 35 |
| 20 | 36 |
| 21 | 39 |
| 22 | 48 |
| 23 | 51 |
| 24 | 55 |
[1,2,4,5,6,8,9,12,13,15,16,17,20,24,25,27,28,32, 35,36,39,48,51,55] |