n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 7 |
4 | 72 |
5 | 1452 |
6 | 43200 |
7 | 1814760 |
8 | 101606400 |
9 | 7315680960 |
10 | 658409472000 |
11 | 72425043734400 |
12 | 9560105533440000 |
13 | 1491376463456140800 |
14 | 271430516305428480000 |
15 | 57000408424183569945600 |
16 | 13680098021793595392000000 |
17 | 3720986661927868408018944000 |
18 | 1138621918549924531666944000000 |
[1,1,7,72,1452,43200,1814760,101606400,7315680960, 658409472000,72425043734400,9560105533440000, 1491376463456140800,271430516305428480000, 57000408424183569945600, 13680098021793595392000000, 3720986661927868408018944000, 1138621918549924531666944000000] |