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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 120 |
| 6 | 120 |
| 7 | 840 |
| 8 | 3360 |
| 9 | 30240 |
| 10 | 30240 |
| 11 | 332640 |
| 12 | 332640 |
| 13 | 4324320 |
| 14 | 4324320 |
| 15 | 4324320 |
| 16 | 17297280 |
| 17 | 294053760 |
| 18 | 294053760 |
| 19 | 5587021440 |
| 20 | 5587021440 |
| 21 | 5587021440 |
| 22 | 5587021440 |
| 23 | 128501493120 |
| 24 | 128501493120 |
| 25 | 3212537328000 |
| 26 | 3212537328000 |
| 27 | 28912835952000 |
| 28 | 28912835952000 |
| 29 | 838472242608000 |
[1,2,6,24,120,120,840,3360,30240,30240,332640, 332640,4324320,4324320,4324320,17297280,294053760, 294053760,5587021440,5587021440,5587021440, 5587021440,128501493120,128501493120, 3212537328000,3212537328000,28912835952000, 28912835952000,838472242608000] |