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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 3 |
| 7 | 3 |
| 8 | 4 |
| 9 | 5 |
| 10 | 6 |
| 11 | 7 |
| 12 | 9 |
| 13 | 10 |
| 14 | 12 |
| 15 | 13 |
| 16 | 15 |
| 17 | 16 |
| 18 | 18 |
| 19 | 19 |
| 20 | 21 |
| 21 | 21 |
| 22 | 27 |
| 23 | 28 |
| 24 | 30 |
| 25 | 30 |
| 26 | 37 |
| 27 | 38 |
| 28 | 40 |
[1,3,3,4,5,6,7,9,10,12,13,15,16,18,19,21,21,27,28, 30,30,37,38,40] |