n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 20 |
3 | 504 |
4 | 24464 |
5 | 1959840 |
6 | 234852672 |
7 | 39370660224 |
8 | 8799246209280 |
9 | 2528787321598464 |
10 | 908585701684024320 |
11 | 399070678264750356480 |
12 | 210373049449102957645824 |
13 | 131083661069772517440921600 |
14 | 95304505860052894815543705600 |
15 | 79961055068441273887848131297280 |
[1,2,20,504,24464,1959840,234852672,39370660224, 8799246209280,2528787321598464,908585701684024320, 399070678264750356480,210373049449102957645824, 131083661069772517440921600, 95304505860052894815543705600, 79961055068441273887848131297280] |