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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1221 |
| 3 | 151807051 |
| 4 | 1921891513498671 |
| 5 | 2477572888040351900883711 |
| 6 | 325225549604893753518411953062063971 |
| 7 | 4347138911747232969546330930965884363451764385131 |
| 8 | 5916747359191672857470732990313720758880725307188900212460107911 |
[1,1221,151807051,1921891513498671, 2477572888040351900883711, 325225549604893753518411953062063971, 4347138911747232969546330930965884363451764385131, 59167473591916728574707329903137207588807253071889\ 00212460107911] |