n | a(n) |
---|---|
0 | 1 |
1 | 40 |
2 | 1080 |
3 | 25200 |
4 | 554400 |
5 | 11975040 |
6 | 259459200 |
7 | 5708102400 |
8 | 128432304000 |
9 | 2968213248000 |
10 | 70643475302400 |
11 | 1733976211968000 |
12 | 43927397369856000 |
13 | 1148870392750080000 |
14 | 31019500604252160000 |
15 | 864410083505160192000 |
[1,40,1080,25200,554400,11975040,259459200, 5708102400,128432304000,2968213248000, 70643475302400,1733976211968000,43927397369856000, 1148870392750080000,31019500604252160000, 864410083505160192000] |