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| n | a(n) |
|---|---|
| 3 | 12 |
| 4 | 60 |
| 5 | 93240 |
| 6 | 2383920 |
| 7 | 298378080 |
| 8 | 5133688560 |
| 9 | 73329656400 |
| 10 | 2168462696400 |
| 11 | 1215784751781600 |
| 12 | 150901712773812000 |
| 13 | 133573286426580000 |
| 14 | 657837749787992373600 |
| 15 | 10597036678652724300000 |
| 16 | 2761248653283183065402400 |
| 17 | 2053281233421697855815439200 |
[12,60,93240,2383920,298378080,5133688560, 73329656400,2168462696400,1215784751781600, 150901712773812000,133573286426580000, 657837749787992373600,10597036678652724300000, 2761248653283183065402400, 2053281233421697855815439200] |