n | a(n) |
---|---|
8 | 1 |
9 | 108 |
10 | 7470 |
11 | 429660 |
12 | 22629915 |
13 | 1143782640 |
14 | 56936699820 |
15 | 2835191759400 |
16 | 142610008065525 |
17 | 7291723635296100 |
18 | 380553986882119050 |
19 | 20327650785482940900 |
20 | 1113292728197378103375 |
21 | 62584367768103890709000 |
[1,108,7470,429660,22629915,1143782640, 56936699820,2835191759400,142610008065525, 7291723635296100,380553986882119050, 20327650785482940900,1113292728197378103375, 62584367768103890709000] |