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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 1719 |
| 4 | 4018152 |
| 5 | 55882468218 |
| 6 | 3454550787171726 |
| 7 | 921229375293720351150 |
| 8 | 1058115897991435552912456494 |
| 9 | 5234423089116609084311564185372068 |
| 10 | 111525513162694816614399225360134812623972 |
[1,10,1719,4018152,55882468218,3454550787171726, 921229375293720351150, 1058115897991435552912456494, 5234423089116609084311564185372068, 111525513162694816614399225360134812623972] |