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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 282 |
| 3 | 16260 |
| 4 | 1093050 |
| 5 | 79796556 |
| 6 | 6152037276 |
| 7 | 492872166072 |
| 8 | 40629560387130 |
| 9 | 3423871305383100 |
| 10 | 293631119403639732 |
| 11 | 25543657090245824712 |
| 12 | 2248575441654260591964 |
| 13 | 199926155194724792622600 |
[6,282,16260,1093050,79796556,6152037276, 492872166072,40629560387130,3423871305383100, 293631119403639732,25543657090245824712, 2248575441654260591964,199926155194724792622600] |