n | a(n) |
---|---|
2 | 1 |
3 | 6 |
4 | 12 |
5 | 100 |
6 | 180 |
7 | 2058 |
8 | 3584 |
9 | 52488 |
10 | 90000 |
11 | 1610510 |
12 | 2737152 |
13 | 57921708 |
14 | 97883968 |
15 | 2392031250 |
16 | 4026531840 |
17 | 111612119056 |
18 | 187339329792 |
19 | 5808378560022 |
20 | 9728000000000 |
21 | 333597619564020 |
22 | 557758378619904 |
23 | 20961814674106394 |
24 | 34998666292887552 |
25 | 1430511474609375000 |
[1,6,12,100,180,2058,3584,52488,90000,1610510, 2737152,57921708,97883968,2392031250,4026531840, 111612119056,187339329792,5808378560022, 9728000000000,333597619564020,557758378619904, 20961814674106394,34998666292887552, 1430511474609375000] |