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| n | a(n) |
|---|---|
| 9 | 4862 |
| 10 | 755820 |
| 11 | 67897830 |
| 12 | 4633467300 |
| 13 | 267074035800 |
| 14 | 13733597077200 |
| 15 | 650800305634050 |
| 16 | 29021018652697500 |
| 17 | 1235362166419751370 |
| 18 | 50713478000403718500 |
| 19 | 2022835296688063807950 |
| 20 | 78843505678630977784500 |
| 21 | 3016017325414346802772080 |
| 22 | 113617986954086473298668800 |
[4862,755820,67897830,4633467300,267074035800, 13733597077200,650800305634050,29021018652697500, 1235362166419751370,50713478000403718500, 2022835296688063807950,78843505678630977784500, 3016017325414346802772080, 113617986954086473298668800] |