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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 73 |
| 4 | 943 |
| 5 | 14601 |
| 6 | 264311 |
| 7 | 5484865 |
| 8 | 128452927 |
| 9 | 3352566673 |
| 10 | 96513215599 |
| 11 | 3038428376721 |
| 12 | 103854777002351 |
| 13 | 3830383180320217 |
| 14 | 151630719172112935 |
| 15 | 6412840260155078401 |
| 16 | 288579496823639935231 |
| 17 | 13767936546888372165153 |
[1,7,73,943,14601,264311,5484865,128452927, 3352566673,96513215599,3038428376721, 103854777002351,3830383180320217, 151630719172112935,6412840260155078401, 288579496823639935231,13767936546888372165153] |