n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 4 |
6 | 1 |
7 | 24 |
8 | 6 |
9 | 192 |
10 | 432 |
11 | 17280 |
12 | 10 |
13 | 207360 |
14 | 51840 |
15 | 322560 |
16 | 1360800 |
17 | 696729600 |
18 | 3225600 |
19 | 12541132800 |
20 | 39191040 |
21 | 27869184000 |
22 | 1316818944000 |
23 | 115880067072000 |
24 | 349272000 |
25 | 2781121609728000 |
26 | 17382010060800000 |
[1,1,1,1,4,1,24,6,192,432,17280,10,207360,51840, 322560,1360800,696729600,3225600,12541132800, 39191040,27869184000,1316818944000, 115880067072000,349272000,2781121609728000, 17382010060800000] |