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| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 113 |
| 2 | 1987 |
| 3 | 552493 |
| 4 | 628313002458512784191921 |
| 5 | 40755082849497410605337341 |
| 6 | 6681921617166540622940410282864619819 |
[5,113,1987,552493,628313002458512784191921, 40755082849497410605337341, 6681921617166540622940410282864619819] |