n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 12 |
5 | 60 |
6 | 180 |
7 | 1260 |
8 | 5040 |
9 | 5040 |
10 | 25200 |
11 | 277200 |
12 | 2494800 |
13 | 32432400 |
14 | 227026800 |
15 | 227026800 |
16 | 3632428800 |
17 | 61751289600 |
18 | 61751289600 |
19 | 1173274502400 |
20 | 29331862560000 |
21 | 29331862560000 |
22 | 322650488160000 |
23 | 7420961227680000 |
24 | 601097859442080000 |
25 | 601097859442080000 |
[1,1,2,6,12,60,180,1260,5040,5040,25200,277200, 2494800,32432400,227026800,227026800,3632428800, 61751289600,61751289600,1173274502400, 29331862560000,29331862560000,322650488160000, 7420961227680000,601097859442080000, 601097859442080000] |