n | a(n) |
---|---|
2 | 3 |
3 | 15 |
4 | 280 |
5 | 11340 |
6 | 798336 |
7 | 86486400 |
8 | 13343616000 |
9 | 2778808032000 |
10 | 750895681536000 |
11 | 255454710858547200 |
12 | 106826515449937920000 |
13 | 53858368206010368000000 |
14 | 32215590089995124736000000 |
15 | 22555515290152300904448000000 |
16 | 18272974787062050706056806400000 |
17 | 16959604724241965811558973440000000 |
[3,15,280,11340,798336,86486400,13343616000, 2778808032000,750895681536000,255454710858547200, 106826515449937920000,53858368206010368000000, 32215590089995124736000000, 22555515290152300904448000000, 18272974787062050706056806400000, 16959604724241965811558973440000000] |