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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 2 |
| 5 | 1 |
| 6 | 6 |
| 7 | 60 |
| 8 | 6 |
| 9 | 1 |
| 10 | 10 |
| 11 | 3024 |
| 12 | 12600 |
| 13 | 24 |
| 14 | 1 |
| 15 | 15 |
| 16 | 240240 |
| 17 | 2874009600 |
| 18 | 38102400 |
| 19 | 120 |
| 20 | 1 |
| 21 | 21 |
| 22 | 27907200 |
| 23 | 129470223826944000 |
| 24 | 159950125679984640000 |
| 25 | 2112397056000 |
| 26 | 720 |
| 27 | 1 |
| 28 | 28 |
| 29 | 4475671200 |
| 30 | 1754345199379977566208000000 |
[1,1,1,3,2,1,6,60,6,1,10,3024,12600,24,1,15, 240240,2874009600,38102400,120,1,21,27907200, 129470223826944000,159950125679984640000, 2112397056000,720,1,28,4475671200, 1754345199379977566208000000] |