n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 3 |
3 | 48 |
4 | 40 |
5 | 1440 |
6 | 1260 |
7 | 8960 |
8 | 72576 |
9 | 7257600 |
10 | 6652800 |
11 | 958003200 |
12 | 889574400 |
13 | 11623772160 |
14 | 163459296000 |
15 | 41845579776000 |
16 | 39520825344000 |
17 | 12804747411456000 |
18 | 12164510040883200 |
19 | 231704953159680000 |
20 | 4644631106519040000 |
[1,4,3,48,40,1440,1260,8960,72576,7257600,6652800, 958003200,889574400,11623772160,163459296000, 41845579776000,39520825344000,12804747411456000, 12164510040883200,231704953159680000, 4644631106519040000] |