n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 70 |
5 | 210 |
6 | 4620 |
7 | 60060 |
8 | 60060 |
9 | 1021020 |
10 | 19399380 |
11 | 19399380 |
12 | 446185740 |
13 | 2230928700 |
14 | 13385572200 |
15 | 388181593800 |
16 | 12033629407800 |
17 | 12033629407800 |
18 | 12033629407800 |
19 | 445244288088600 |
20 | 445244288088600 |
21 | 18255015811632600 |
[1,1,2,10,70,210,4620,60060,60060,1021020, 19399380,19399380,446185740,2230928700, 13385572200,388181593800,12033629407800, 12033629407800,12033629407800,445244288088600, 445244288088600,18255015811632600] |