n | a(n) |
---|---|
2 | 0 |
3 | 6 |
4 | 240 |
5 | 1020 |
6 | 78120 |
7 | 279930 |
8 | 40353600 |
9 | 134217720 |
10 | 31381059600 |
11 | 99999999990 |
12 | 34522712143920 |
13 | 106993205379060 |
14 | 51185893014090744 |
15 | 155568095557812210 |
16 | 98526125335693359360 |
17 | 295147905179352825840 |
18 | 239072435685151324847136 |
[0,6,240,1020,78120,279930,40353600,134217720, 31381059600,99999999990,34522712143920, 106993205379060,51185893014090744, 155568095557812210,98526125335693359360, 295147905179352825840,239072435685151324847136] |