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| n | a(n) |
|---|---|
| 2 | 33 |
| 3 | 170 |
| 4 | 1274 |
| 5 | 15470 |
| 6 | 33614 |
| 7 | 3145310 |
| 8 | 40909374 |
| 9 | 668363967 |
| 10 | 9864741248 |
| 11 | 179199427328 |
| 12 | 967461818750 |
| 13 | 57938945781248 |
[33,170,1274,15470,33614,3145310,40909374, 668363967,9864741248,179199427328,967461818750, 57938945781248] |