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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 208 |
| 3 | 29568 |
| 4 | 7452704 |
| 5 | 2941306368 |
| 6 | 1683453629440 |
| 7 | 1323082429842432 |
| 8 | 1370418864769445888 |
| 9 | 1811764909105311267840 |
| 10 | 2980039854936078219167744 |
| 11 | 5972307516078119199647692800 |
[4,208,29568,7452704,2941306368,1683453629440, 1323082429842432,1370418864769445888, 1811764909105311267840,2980039854936078219167744, 5972307516078119199647692800] |