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| n | a(n) |
|---|---|
| 2 | 16 |
| 3 | 766 |
| 4 | 61184 |
| 5 | 3112500 |
| 6 | 105851488 |
| 7 | 2138413851 |
| 8 | 27990555776 |
| 9 | 262835331687 |
| 10 | 1909384608000 |
| 11 | 11319915386120 |
| 12 | 56916060868096 |
| 13 | 249702337698346 |
| 14 | 976762617522160 |
| 15 | 3464394870851125 |
| 16 | 11290721919375872 |
| 17 | 34177386571594701 |
[16,766,61184,3112500,105851488,2138413851, 27990555776,262835331687,1909384608000, 11319915386120,56916060868096,249702337698346, 976762617522160,3464394870851125, 11290721919375872,34177386571594701] |