n | a(n) |
---|---|
4 | 1 |
5 | 15 |
6 | 210 |
7 | 3150 |
8 | 51975 |
9 | 945945 |
10 | 18918900 |
11 | 413513100 |
12 | 9820936125 |
13 | 252070693875 |
14 | 6957151150950 |
15 | 205552193096250 |
16 | 6474894082531875 |
17 | 216659917377028125 |
18 | 7675951358500425000 |
19 | 287080580807915895000 |
20 | 11303797869311688365625 |
21 | 467445288360359818884375 |
[1,15,210,3150,51975,945945,18918900,413513100, 9820936125,252070693875,6957151150950, 205552193096250,6474894082531875, 216659917377028125,7675951358500425000, 287080580807915895000,11303797869311688365625, 467445288360359818884375] |