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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 1445 |
| 3 | 487350000 |
| 4 | 6820689973308563232421875 |
| 5 | 5721266536171567118387561969710675136013833252945914864540100097656250000 |
[16,1445,487350000,6820689973308563232421875, 57212665361715671183875619697106751360138332529459\ 14864540100097656250000] |