n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 608 |
7 | 3684 |
8 | 23136 |
9 | 185772 |
10 | 1557704 |
11 | 14531768 |
12 | 142953580 |
13 | 1530728460 |
14 | 17401543208 |
15 | 210735290068 |
16 | 2698171998814 |
[1,2,6,24,120,608,3684,23136,185772,1557704, 14531768,142953580,1530728460,17401543208, 210735290068,2698171998814] |