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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 61 |
| 3 | 18903 |
| 4 | 31640829 |
| 5 | 289301569283 |
| 6 | 14572563308953245 |
| 7 | 4059527861103273129317 |
| 8 | 6270118871204192400242141667 |
| 9 | 53785756580019628016324622812810239 |
[1,61,18903,31640829,289301569283, 14572563308953245,4059527861103273129317, 6270118871204192400242141667, 53785756580019628016324622812810239] |