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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 2584 |
| 4 | 3695683 |
| 5 | 39209840355 |
| 6 | 3083761998081891 |
| 7 | 1797997097480559332224 |
| 8 | 7771716024559573445914487875 |
[1,14,2584,3695683,39209840355,3083761998081891, 1797997097480559332224, 7771716024559573445914487875] |