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| n | a(n) |
|---|---|
| 1 | 404 |
| 2 | 7937268 |
| 3 | 163506788110 |
| 4 | 3368739754955320 |
| 5 | 69406373651979823710 |
| 6 | 1429984226143212404754264 |
| 7 | 29462062047551694076888833310 |
| 8 | 607008863611669902737169765762040 |
[404,7937268,163506788110,3368739754955320, 69406373651979823710,1429984226143212404754264, 29462062047551694076888833310, 607008863611669902737169765762040] |