n | a(n) |
---|---|
4 | 6 |
5 | 150 |
6 | 3240 |
7 | 72030 |
8 | 1719060 |
9 | 44520840 |
10 | 1252364400 |
11 | 38167414560 |
12 | 1255558958280 |
13 | 44404434904830 |
14 | 1681726757430720 |
15 | 67953913291104750 |
16 | 2919509551303952880 |
17 | 132943540577100047760 |
18 | 6397727538671302783680 |
19 | 324511272091351156939200 |
20 | 17306903935107005765263200 |
[6,150,3240,72030,1719060,44520840,1252364400, 38167414560,1255558958280,44404434904830, 1681726757430720,67953913291104750, 2919509551303952880,132943540577100047760, 6397727538671302783680,324511272091351156939200, 17306903935107005765263200] |