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| n | a(n) |
|---|---|
| 1 | 120 |
| 2 | 2 |
| 3 | 3 |
| 4 | 3 |
| 5 | 8 |
| 6 | 279 |
| 7 | 15686 |
| 8 | 711359 |
| 9 | 21893719 |
| 10 | 463755018 |
| 11 | 7207021169 |
| 12 | 87874269331 |
| 13 | 889903537402 |
[120,2,3,3,8,279,15686,711359,21893719,463755018, 7207021169,87874269331,889903537402] |