n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 20 |
3 | 352 |
4 | 8624 |
5 | 266784 |
6 | 9896448 |
7 | 426577920 |
8 | 20918138624 |
9 | 1149216540160 |
10 | 69911382901760 |
11 | 4665553152081920 |
12 | 338942971881472000 |
13 | 26631920159494995968 |
14 | 2250690001888540950528 |
15 | 203595258621775065120768 |
16 | 19629810220331494121865216 |
[1,2,20,352,8624,266784,9896448,426577920, 20918138624,1149216540160,69911382901760, 4665553152081920,338942971881472000, 26631920159494995968,2250690001888540950528, 203595258621775065120768, 19629810220331494121865216] |