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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 7 |
| 5 | 9 |
| 6 | 10 |
| 7 | 12 |
| 8 | 24 |
| 9 | 39 |
| 10 | 135 |
| 11 | 258 |
| 12 | 382 |
| 13 | 660 |
| 14 | 900 |
| 15 | 1306 |
| 16 | 1528 |
| 17 | 3658 |
| 18 | 3937 |
| 19 | 5157 |
| 20 | 7006 |
| 21 | 7936 |
| 22 | 10956 |
| 23 | 15396 |
| 24 | 45808 |
| 25 | 198403 |
[1,3,6,7,9,10,12,24,39,135,258,382,660,900,1306, 1528,3658,3937,5157,7006,7936,10956,15396,45808, 198403] |