n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 52 |
3 | 600 |
4 | 8680 |
5 | 151200 |
6 | 3082240 |
7 | 71998080 |
8 | 1896294400 |
9 | 55601145600 |
10 | 1796277683200 |
11 | 63397990656000 |
12 | 2427084884224000 |
13 | 100175046107136000 |
14 | 4434284662872064000 |
15 | 209554432423784448000 |
16 | 10530302071553904640000 |
17 | 560682451860226375680000 |
[1,6,52,600,8680,151200,3082240,71998080, 1896294400,55601145600,1796277683200, 63397990656000,2427084884224000, 100175046107136000,4434284662872064000, 209554432423784448000,10530302071553904640000, 560682451860226375680000] |