n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 8 |
3 | 180 |
4 | 32 |
5 | 10080 |
6 | 3456 |
7 | 453600 |
8 | 115200 |
9 | 47900160 |
10 | 71680 |
11 | 217945728000 |
12 | 36578304000 |
13 | 2241727488000 |
14 | 45984153600 |
15 | 2000741783040000 |
16 | 918421504 |
17 | 43667471941632000 |
18 | 5751865147392000 |
19 | 240857298809487360000 |
[2,6,8,180,32,10080,3456,453600,115200,47900160, 71680,217945728000,36578304000,2241727488000, 45984153600,2000741783040000,918421504, 43667471941632000,5751865147392000, 240857298809487360000] |