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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 14474 |
| 4 | 131204813713122 |
| 5 | 132431858995585724536583901671708647 |
| 6 | 20717425607872632053632351670738034346764162305716050849113959210873829416 |
[1,1,2,14474,131204813713122, 132431858995585724536583901671708647, 20717425607872632053632351670738034346764162305716\ 050849113959210873829416] |