n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 114 |
4 | 1440 |
5 | 22680 |
6 | 428400 |
7 | 9439920 |
8 | 237726720 |
9 | 6735052800 |
10 | 212012640000 |
11 | 7341338188800 |
12 | 277317497318400 |
13 | 11348577278438400 |
14 | 500138456661043200 |
15 | 23615780481925632000 |
16 | 1189441481702842368000 |
[1,2,12,114,1440,22680,428400,9439920,237726720, 6735052800,212012640000,7341338188800, 277317497318400,11348577278438400, 500138456661043200,23615780481925632000, 1189441481702842368000] |