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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 1156 |
| 4 | 22801 |
| 5 | 1666681 |
| 6 | 32878756 |
| 7 | 2403352576 |
| 8 | 47411143081 |
| 9 | 3465632747641 |
| 10 | 68366835443776 |
| 11 | 4997440018745476 |
| 12 | 98584929298781641 |
| 13 | 7206305041398228481 |
| 14 | 142159399682007682276 |
| 15 | 10391486872256226723856 |
| 16 | 204993755756525779060081 |
| 17 | 14984516863488437537571601 |
[1,16,1156,22801,1666681,32878756,2403352576, 47411143081,3465632747641,68366835443776, 4997440018745476,98584929298781641, 7206305041398228481,142159399682007682276, 10391486872256226723856,204993755756525779060081, 14984516863488437537571601] |