n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 5 |
4 | 2 |
5 | 65 |
6 | 24 |
7 | 163 |
8 | 60 |
9 | 1957 |
10 | 720 |
11 | 685 |
12 | 252 |
13 | 109601 |
14 | 40320 |
15 | 98641 |
16 | 36288 |
17 | 9864101 |
18 | 3628800 |
19 | 13563139 |
20 | 4989600 |
21 | 260412269 |
22 | 95800320 |
23 | 8463398743 |
24 | 3113510400 |
25 | 47395032961 |
26 | 17435658240 |
27 | 888656868019 |
28 | 326918592000 |
[1,1,5,2,65,24,163,60,1957,720,685,252,109601, 40320,98641,36288,9864101,3628800,13563139, 4989600,260412269,95800320,8463398743,3113510400, 47395032961,17435658240,888656868019,326918592000] |