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| n | a(n) |
|---|---|
| 6 | 60 |
| 7 | 0 |
| 8 | 840 |
| 9 | 20160 |
| 10 | 15120 |
| 11 | 0 |
| 12 | 7920 |
| 13 | 0 |
| 14 | 8648640 |
| 15 | 240240 |
| 16 | 3603600 |
| 17 | 0 |
| 18 | 8910720 |
| 19 | 0 |
| 20 | 1395360 |
| 21 | 390700800 |
| 22 | 14079294028800 |
| 23 | 0 |
| 24 | 212520 |
| 25 | 7117005772800 |
| 26 | 32382376266240000 |
| 27 | 1133836704000 |
| 28 | 4475671200 |
| 29 | 0 |
| 30 | 14250600 |
| 31 | 0 |
| 32 | 318073392000 |
[60,0,840,20160,15120,0,7920,0,8648640,240240, 3603600,0,8910720,0,1395360,390700800, 14079294028800,0,212520,7117005772800, 32382376266240000,1133836704000,4475671200,0, 14250600,0,318073392000] |