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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 15 |
| 3 | 20 |
| 4 | 30 |
| 5 | 40 |
| 6 | 60 |
| 7 | 84 |
| 8 | 90 |
| 9 | 120 |
| 10 | 140 |
| 11 | 165 |
| 12 | 180 |
| 13 | 240 |
| 14 | 300 |
| 15 | 340 |
| 16 | 390 |
| 17 | 540 |
| 18 | 660 |
| 19 | 840 |
| 20 | 1140 |
| 21 | 1740 |
| 22 | 3540 |
[12,15,20,30,40,60,84,90,120,140,165,180,240,300, 340,390,540,660,840,1140,1740,3540] |