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| n | a(n) |
|---|---|
| 9 | 105 |
| 10 | 7968 |
| 11 | 306729 |
| 12 | 8862336 |
| 13 | 221041785 |
| 14 | 5090751360 |
| 15 | 112456455285 |
| 16 | 2438635714560 |
| 17 | 52685573396310 |
| 18 | 1145097655557120 |
| 19 | 25201633254603750 |
| 20 | 564111809386352640 |
| 21 | 12881077471698335550 |
| 22 | 300654388617807974400 |
| 23 | 7182803417002318476630 |
| 24 | 175794354355113443819520 |
[105,7968,306729,8862336,221041785,5090751360, 112456455285,2438635714560,52685573396310, 1145097655557120,25201633254603750, 564111809386352640,12881077471698335550, 300654388617807974400,7182803417002318476630, 175794354355113443819520] |