n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 12 |
4 | 112 |
5 | 1440 |
6 | 23664 |
7 | 473984 |
8 | 11203200 |
9 | 305268480 |
10 | 9421739520 |
11 | 324874716672 |
12 | 12377880797184 |
13 | 516412532213760 |
14 | 23414906122352640 |
15 | 1146462496418119680 |
16 | 60286544709800361984 |
17 | 3388531521749583790080 |
18 | 202734601173679682027520 |
19 | 12863997904326532359782400 |
[1,2,12,112,1440,23664,473984,11203200,305268480, 9421739520,324874716672,12377880797184, 516412532213760,23414906122352640, 1146462496418119680,60286544709800361984, 3388531521749583790080,202734601173679682027520, 12863997904326532359782400] |