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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 7 |
| 3 | 21 |
| 4 | 441 |
| 5 | 194481 |
| 6 | 37822859361 |
| 7 | 1430568690241985328321 |
| 8 | 2046526777500669368329342638102622164679041 |
| 9 | 4188271851027274266670020743752976432915773724299403513508038881183728210190544679681 |
[3,7,21,441,194481,37822859361, 1430568690241985328321, 2046526777500669368329342638102622164679041, 41882718510272742666700207437529764329157737242994\ 03513508038881183728210190544679681] |