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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 58 |
| 4 | 614 |
| 5 | 8032 |
| 6 | 125757 |
| 7 | 2298208 |
| 8 | 48075148 |
| 9 | 1133554432 |
| 10 | 29756555315 |
| 11 | 860884417024 |
| 12 | 27218972906226 |
| 13 | 933850899349504 |
| 14 | 34556209025624041 |
| 15 | 1371957513591119872 |
| 16 | 58174957356247084568 |
| 17 | 2624017129323317493760 |
| 18 | 125454378698728779884895 |
| 19 | 6337442836338834419089408 |
[1,7,58,614,8032,125757,2298208,48075148, 1133554432,29756555315,860884417024, 27218972906226,933850899349504,34556209025624041, 1371957513591119872,58174957356247084568, 2624017129323317493760,125454378698728779884895, 6337442836338834419089408] |