n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 7 |
6 | 5 |
7 | 85 |
8 | 335 |
9 | 1135 |
10 | 15245 |
11 | 13475 |
12 | 717575 |
13 | 4256825 |
14 | 29782325 |
15 | 525045275 |
16 | 243258625 |
17 | 56809006625 |
18 | 415670267875 |
19 | 5068080417875 |
20 | 104229929847625 |
21 | 60861649495625 |
22 | 20784245979986875 |
23 | 169274937975443125 |
24 | 3318579283890780625 |
25 | 75028912866554839375 |
[1,1,1,1,7,5,85,335,1135,15245,13475,717575, 4256825,29782325,525045275,243258625,56809006625, 415670267875,5068080417875,104229929847625, 60861649495625,20784245979986875, 169274937975443125,3318579283890780625, 75028912866554839375] |