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| n | a(n) |
|---|---|
| 1 | 111188198 |
| 2 | 435599518160 |
| 3 | 891778365437358 |
| 4 | 2292090739550640497 |
| 5 | 5583822993675095945553 |
[111188198,435599518160,891778365437358, 2292090739550640497,5583822993675095945553] |