n | a(n) |
---|---|
2 | 1 |
3 | 5 |
4 | 24 |
5 | 128 |
6 | 770 |
7 | 5190 |
8 | 38864 |
9 | 320704 |
10 | 2894544 |
11 | 28382800 |
12 | 300575968 |
13 | 3419882304 |
14 | 41612735632 |
15 | 539295974000 |
16 | 7417120846080 |
17 | 107904105986048 |
18 | 1655634186628352 |
19 | 26721851169634560 |
20 | 452587550053179392 |
21 | 8026445538106839040 |
22 | 148751109541600495104 |
[1,5,24,128,770,5190,38864,320704,2894544, 28382800,300575968,3419882304,41612735632, 539295974000,7417120846080,107904105986048, 1655634186628352,26721851169634560, 452587550053179392,8026445538106839040, 148751109541600495104] |