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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 1 |
| 3 | 370 |
| 4 | 123456790 |
| 5 | 411522633744855967078189300 |
| 6 | 137174211248285322359396433470507544581618655692729766803840877914951989026063100 |
[3,1,370,123456790,411522633744855967078189300, 13717421124828532235939643347050754458161865569272\ 9766803840877914951989026063100] |