n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 4 |
5 | 10 |
6 | 60 |
7 | 105 |
8 | 280 |
9 | 1260 |
10 | 12600 |
11 | 27720 |
12 | 83160 |
13 | 360360 |
14 | 2522520 |
15 | 37837800 |
16 | 100900800 |
17 | 343062720 |
18 | 1543782240 |
19 | 9777287520 |
20 | 97772875200 |
21 | 2053230379200 |
22 | 6453009763200 |
23 | 24736537425600 |
24 | 118735379642880 |
25 | 742096122768000 |
26 | 6431499730656000 |
[1,1,1,3,4,10,60,105,280,1260,12600,27720,83160, 360360,2522520,37837800,100900800,343062720, 1543782240,9777287520,97772875200,2053230379200, 6453009763200,24736537425600,118735379642880, 742096122768000,6431499730656000] |