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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 72 |
| 6 | 144 |
| 7 | 1440 |
| 8 | 2880 |
| 9 | 43200 |
| 10 | 86400 |
| 11 | 1814400 |
| 12 | 3628800 |
| 13 | 101606400 |
| 14 | 203212800 |
| 15 | 7315660800 |
| 16 | 14631321600 |
| 17 | 658409472000 |
| 18 | 1316818944000 |
| 19 | 72425041920000 |
| 20 | 144850083840000 |
| 21 | 9560105533440000 |
| 22 | 19120211066880000 |
| 23 | 1491376463216640000 |
| 24 | 2982752926433280000 |
[1,1,2,6,12,72,144,1440,2880,43200,86400,1814400, 3628800,101606400,203212800,7315660800, 14631321600,658409472000,1316818944000, 72425041920000,144850083840000,9560105533440000, 19120211066880000,1491376463216640000, 2982752926433280000] |