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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 180 |
| 2 | 5040 |
| 3 | 143640 |
| 4 | 4199580 |
| 5 | 125621496 |
| 6 | 3830266440 |
| 7 | 118655943120 |
| 8 | 3724872182460 |
| 9 | 118248726796200 |
| 10 | 3789926661961440 |
| 11 | 122473276342326000 |
| 12 | 3986235855826497000 |
| 13 | 130561182081992667600 |
| 14 | 4300094066688571550400 |
[6,180,5040,143640,4199580,125621496,3830266440, 118655943120,3724872182460,118248726796200, 3789926661961440,122473276342326000, 3986235855826497000,130561182081992667600, 4300094066688571550400] |