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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 102 |
| 4 | 7185 |
| 5 | 1944779 |
| 6 | 2076384112 |
| 7 | 8356101105886 |
| 8 | 127186506081050671 |
[1,5,102,7185,1944779,2076384112,8356101105886, 127186506081050671] |