n | a(n) |
---|---|
0 | 1 |
1 | 20 |
2 | 1120 |
3 | 3200 |
4 | 3942400 |
5 | 66560000 |
6 | 10035200000 |
7 | 136478720000 |
8 | 268461670400000 |
9 | 56518246400000 |
10 | 23658537943040000000 |
11 | 51431604224000000 |
12 | 70718455808000000 |
13 | 102541760921600000 |
14 | 23292891381760000000 |
15 | 8879987916800000 |
16 | 144993552704000000 |
17 | 1072952290009600000 |
[1,20,1120,3200,3942400,66560000,10035200000, 136478720000,268461670400000,56518246400000, 23658537943040000000,51431604224000000, 70718455808000000,102541760921600000, 23292891381760000000,8879987916800000, 144993552704000000,1072952290009600000] |