n | a(n) |
---|---|
4 | 6 |
5 | 30 |
6 | 300 |
7 | 2100 |
8 | 21840 |
9 | 236880 |
10 | 2731680 |
11 | 30048480 |
12 | 400498560 |
13 | 5206481280 |
14 | 79117758720 |
15 | 1273944672000 |
16 | 21690789120000 |
17 | 368743415040000 |
18 | 6993068898816000 |
19 | 132868309077504000 |
20 | 2779011281958912000 |
21 | 60792138929313792000 |
22 | 1388517998616612864000 |
[6,30,300,2100,21840,236880,2731680,30048480, 400498560,5206481280,79117758720,1273944672000, 21690789120000,368743415040000,6993068898816000, 132868309077504000,2779011281958912000, 60792138929313792000,1388517998616612864000] |