n | a(n) |
---|---|
3 | 1 |
4 | 24 |
5 | 435 |
6 | 7140 |
7 | 111930 |
8 | 1712304 |
9 | 25827165 |
10 | 386206920 |
11 | 5743572120 |
12 | 85113005120 |
13 | 1258315963905 |
14 | 18574174153080 |
15 | 273897571557780 |
16 | 4036320536972640 |
17 | 59458448728028700 |
18 | 875691012480893280 |
[1,24,435,7140,111930,1712304,25827165,386206920, 5743572120,85113005120,1258315963905, 18574174153080,273897571557780,4036320536972640, 59458448728028700,875691012480893280] |