n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 15 |
5 | 135 |
6 | 1875 |
7 | 38745 |
8 | 1168545 |
9 | 50017905 |
10 | 3029330745 |
11 | 257116925835 |
12 | 30546104308335 |
13 | 5065906139629335 |
14 | 1172940061645387035 |
15 | 379092680506164049425 |
16 | 171204492289446788997825 |
17 | 108139946568584292606269025 |
18 | 95671942593719946611454522225 |
[1,1,1,3,15,135,1875,38745,1168545,50017905, 3029330745,257116925835,30546104308335, 5065906139629335,1172940061645387035, 379092680506164049425,171204492289446788997825, 108139946568584292606269025, 95671942593719946611454522225] |