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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 31 |
| 4 | 977 |
| 5 | 8311 |
| 6 | 6303211 |
| 7 | 376085401 |
| 8 | 243108206127601 |
| 9 | 797617957269902814324298809066990611 |
| 10 | 13986539709338184569448604343396198783632139863691161608206506541 |
[2,7,31,977,8311,6303211,376085401, 243108206127601, 797617957269902814324298809066990611, 13986539709338184569448604343396198783632139863691\ 161608206506541] |