n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 72 |
5 | 480 |
6 | 4320 |
7 | 45360 |
8 | 524160 |
9 | 6894720 |
10 | 101606400 |
11 | 1636588800 |
12 | 28740096000 |
13 | 547977830400 |
14 | 11245999564800 |
15 | 247150455552000 |
16 | 5795612798976000 |
17 | 144409095806976000 |
18 | 3809412354908160000 |
[1,1,2,12,72,480,4320,45360,524160,6894720, 101606400,1636588800,28740096000,547977830400, 11245999564800,247150455552000,5795612798976000, 144409095806976000,3809412354908160000] |