n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 14 |
4 | 81 |
5 | 744 |
6 | 7150 |
7 | 91440 |
8 | 1261365 |
9 | 20555360 |
10 | 368312616 |
11 | 7428153600 |
12 | 162882057030 |
13 | 3923502105600 |
14 | 101891502638640 |
15 | 2856307527305232 |
16 | 85656971742266925 |
17 | 2742370993410048000 |
18 | 93222005898792010240 |
[1,3,14,81,744,7150,91440,1261365,20555360, 368312616,7428153600,162882057030,3923502105600, 101891502638640,2856307527305232, 85656971742266925,2742370993410048000, 93222005898792010240] |