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n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 53 |
4 | 1931 |
5 | 207869 |
6 | 51294911 |
7 | 24248219519 |
8 | 19450040191157 |
9 | 24316888409626507 |
[1,5,53,1931,207869,51294911,24248219519, 19450040191157,24316888409626507] |