n | a(n) |
---|---|
3 | 2 |
4 | 24 |
5 | 300 |
6 | 4360 |
7 | 74130 |
8 | 1456224 |
9 | 32562152 |
10 | 817596000 |
11 | 22785399450 |
12 | 697951656160 |
13 | 23306666102148 |
14 | 842567564800416 |
15 | 32781106696806650 |
16 | 1365579024023558400 |
17 | 60639189588419033040 |
18 | 2859165143013913590016 |
19 | 142651621238828972159538 |
20 | 7508140027468431374563200 |
[2,24,300,4360,74130,1456224,32562152,817596000, 22785399450,697951656160,23306666102148, 842567564800416,32781106696806650, 1365579024023558400,60639189588419033040, 2859165143013913590016,142651621238828972159538, 7508140027468431374563200] |