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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 36 |
| 5 | 210 |
| 6 | 1260 |
| 7 | 8100 |
| 8 | 46656 |
| 9 | 262440 |
| 10 | 1574640 |
| 11 | 9843120 |
| 12 | 60963840 |
| 13 | 369476640 |
| 14 | 2210794560 |
| 15 | 13162730688 |
| 16 | 78364164096 |
| 17 | 468205557120 |
| 18 | 2809233342720 |
| 19 | 16891882995456 |
| 20 | 101559956668416 |
| 21 | 609954817881600 |
| 22 | 3659728907289600 |
| 23 | 21947909832446976 |
| 24 | 131623189859008512 |
[0,0,3,36,210,1260,8100,46656,262440,1574640, 9843120,60963840,369476640,2210794560,13162730688, 78364164096,468205557120,2809233342720, 16891882995456,101559956668416,609954817881600, 3659728907289600,21947909832446976, 131623189859008512] |