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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 3 |
| 5 | 9 |
| 6 | 4 |
| 7 | 12 |
| 8 | 5 |
| 9 | 360000 |
| 10 | 6 |
| 11 | 90 |
| 12 | 7 |
| 13 | 28235760 |
| 14 | 10 |
| 15 | 504 |
| 16 | 11 |
| 17 | 450153650100 |
| 18 | 13 |
| 19 | 17637403357173600000 |
| 20 | 14 |
| 21 | 25740 |
| 22 | 15 |
| 23 | 360360 |
| 24 | 16 |
| 25 | 215255040 |
| 26 | 17 |
| 27 | 33593154183197105261619254400 |
| 28 | 18 |
| 29 | 16278356694600 |
| 30 | 19 |
[1,2,8,3,9,4,12,5,360000,6,90,7,28235760,10,504, 11,450153650100,13,17637403357173600000,14,25740, 15,360360,16,215255040,17, 33593154183197105261619254400,18,16278356694600, 19] |