n | a(n) |
---|---|
1 | 1 |
2 | 20 |
3 | 1584 |
4 | 475456 |
5 | 541981440 |
6 | 2376277529600 |
7 | 40580860464967680 |
8 | 2725519037191790608384 |
9 | 724680197846400799531008000 |
10 | 766028090108619425976217272320000 |
11 | 3227487808644444231639810280103215104000 |
[1,20,1584,475456,541981440,2376277529600, 40580860464967680,2725519037191790608384, 724680197846400799531008000, 766028090108619425976217272320000, 3227487808644444231639810280103215104000] |