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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 49 |
| 3 | 5215 |
| 4 | 21841937 |
| 5 | 3430832678207 |
| 6 | 21070560836988719941 |
| 7 | 5258020825380244651432771257 |
| 8 | 54855616345977485934984671841940089233 |
[1,7,49,5215,21841937,3430832678207, 21070560836988719941,5258020825380244651432771257, 54855616345977485934984671841940089233] |