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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 57 |
| 4 | 2713 |
| 5 | 4918440 |
| 6 | 22223269372702 |
| 7 | 355194969748884199331083933 |
| 8 | 896996605353313749663062291034129550464167047150212163 |
| 9 | 710754225314643793883316602476833806192189702887005360976366457324682443530843343068467237316280025378530303 |
[2,7,57,2713,4918440,22223269372702, 355194969748884199331083933, 89699660535331374966306229103412955046416704715021\ 2163, 71075422531464379388331660247683380619218970288700\ 53609763664573246824435308433430684672373162800253\ 78530303] |