n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 15 |
4 | 105 |
5 | 1155 |
6 | 15015 |
7 | 255255 |
8 | 4849845 |
9 | 111546435 |
10 | 3234846615 |
11 | 100280245065 |
12 | 3710369067405 |
13 | 152125131763605 |
14 | 6541380665835015 |
15 | 307444891294245705 |
16 | 16294579238595022365 |
17 | 961380175077106319535 |
18 | 58644190679703485491635 |
19 | 3929160775540133527939545 |
20 | 278970415063349480483707695 |
[1,3,15,105,1155,15015,255255,4849845,111546435, 3234846615,100280245065,3710369067405, 152125131763605,6541380665835015, 307444891294245705,16294579238595022365, 961380175077106319535,58644190679703485491635, 3929160775540133527939545, 278970415063349480483707695] |