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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 63591 |
| 3 | 45481765921 |
| 4 | 160604998959958441 |
| 5 | 1874723678075686559978901 |
| 6 | 56966859544114373201026220221351 |
| 7 | 3844457292000022475228241534754501141141 |
[1,63591,45481765921,160604998959958441, 1874723678075686559978901, 56966859544114373201026220221351, 3844457292000022475228241534754501141141] |