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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 70 |
| 3 | 31830 |
| 4 | 50395146 |
| 5 | 205822250572 |
| 6 | 1808558575291438 |
| 7 | 30242498188745996934 |
[1,70,31830,50395146,205822250572, 1808558575291438,30242498188745996934] |