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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2636362 |
| 3 | 106515601 |
| 4 | 3066863686603 |
| 5 | 148749979947841 |
| 6 | 219339595933912 |
| 7 | 853637858736358 |
[1,2636362,106515601,3066863686603, 148749979947841,219339595933912,853637858736358] |