n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 24 |
4 | 336 |
5 | 5520 |
6 | 203040 |
7 | 7025760 |
8 | 510370560 |
9 | 30163311360 |
10 | 3577017024000 |
11 | 319851801561600 |
12 | 55850407258060800 |
13 | 7021439018770176000 |
14 | 1692163531361176473600 |
15 | 284409062346887622144000 |
16 | 90395009213694143422464000 |
17 | 19571060809440210728706048000 |
18 | 7929132907666579072319471616000 |
[1,4,24,336,5520,203040,7025760,510370560, 30163311360,3577017024000,319851801561600, 55850407258060800,7021439018770176000, 1692163531361176473600,284409062346887622144000, 90395009213694143422464000, 19571060809440210728706048000, 7929132907666579072319471616000] |