n | a(n) |
---|---|
1 | 1 |
2 | 12 |
3 | 252 |
4 | 7560 |
5 | 294840 |
6 | 14152320 |
7 | 806682240 |
8 | 53241027840 |
9 | 3993077088000 |
10 | 335418475392000 |
11 | 31193918211456000 |
12 | 3181779657568512000 |
13 | 353177541990104832000 |
14 | 42381305038812579840000 |
15 | 5467188350006822799360000 |
16 | 754471992300941546311680000 |
17 | 110907382868238407307816960000 |
18 | 17301551727445191540019445760000 |
[1,12,252,7560,294840,14152320,806682240, 53241027840,3993077088000,335418475392000, 31193918211456000,3181779657568512000, 353177541990104832000,42381305038812579840000, 5467188350006822799360000, 754471992300941546311680000, 110907382868238407307816960000, 17301551727445191540019445760000] |