n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 20 |
4 | 194 |
5 | 2554 |
6 | 42226 |
7 | 843744 |
8 | 19769256 |
9 | 531768120 |
10 | 16152296424 |
11 | 546895099200 |
12 | 20425461026736 |
13 | 834215500905552 |
14 | 36988602430554576 |
15 | 1769524998544143360 |
16 | 90851799797294235264 |
17 | 4982968503277896871296 |
[1,3,20,194,2554,42226,843744,19769256,531768120, 16152296424,546895099200,20425461026736, 834215500905552,36988602430554576, 1769524998544143360,90851799797294235264, 4982968503277896871296] |