n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 24 |
4 | 144 |
5 | 1080 |
6 | 9360 |
7 | 92400 |
8 | 1038240 |
9 | 13063680 |
10 | 181137600 |
11 | 2744280000 |
12 | 45145900800 |
13 | 801313793280 |
14 | 15256927445760 |
15 | 310158565516800 |
16 | 6705376386508800 |
17 | 153609543947059200 |
18 | 3716764672074854400 |
19 | 94715288771578675200 |
20 | 2535525218048030208000 |
[1,2,6,24,144,1080,9360,92400,1038240,13063680, 181137600,2744280000,45145900800,801313793280, 15256927445760,310158565516800,6705376386508800, 153609543947059200,3716764672074854400, 94715288771578675200,2535525218048030208000] |