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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 5 |
| 5 | 6 |
| 6 | 8 |
| 7 | 9 |
| 8 | 10 |
| 9 | 12 |
| 10 | 16 |
| 11 | 18 |
| 12 | 20 |
| 13 | 24 |
| 14 | 30 |
| 15 | 36 |
| 16 | 48 |
| 17 | 60 |
| 18 | 72 |
| 19 | 84 |
| 20 | 120 |
| 21 | 180 |
| 22 | 240 |
| 23 | 360 |
| 24 | 720 |
| 25 | 840 |
| 26 | 2520 |
| 27 | 5040 |
[2,3,4,5,6,8,9,10,12,16,18,20,24,30,36,48,60,72, 84,120,180,240,360,720,840,2520,5040] |