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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 8 |
| 4 | 1024 |
| 5 | 33554432 |
| 6 | 72057594037927936 |
| 7 | 664613997892457936451903530140172288 |
| 8 | 113078212145816597093331040047546785012958969400039613319782796882727665664 |
[1,8,1024,33554432,72057594037927936, 664613997892457936451903530140172288, 11307821214581659709333104004754678501295896940003\ 9613319782796882727665664] |