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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 47 |
| 6 | 47 |
| 7 | 6047 |
| 8 | 477727 |
| 9 | 30596497 |
| 10 | 3388516667 |
| 11 | 340746580567 |
| 12 | 1763093883977 |
| 13 | 773521306107547 |
| 14 | 1142275515892937 |
[2,2,2,2,47,47,6047,477727,30596497,3388516667, 340746580567,1763093883977,773521306107547, 1142275515892937] |