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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 66 |
| 2 | 33330 |
| 3 | 342999030 |
| 4 | 2338224387510 |
| 5 | 9355235774427510 |
| 6 | 936123257411127577818510 |
| 7 | 9601480183016524970884020224910 |
| 8 | 394815332706046542049668428841497001870 |
| 9 | 24675958688943241584150818852261991458372001870 |
[2,66,33330,342999030,2338224387510, 9355235774427510,936123257411127577818510, 9601480183016524970884020224910, 394815332706046542049668428841497001870, 24675958688943241584150818852261991458372001870] |