n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 120 |
5 | 1750 |
6 | 34615 |
7 | 882868 |
8 | 28008694 |
9 | 1076404824 |
10 | 49100939538 |
11 | 2615329877358 |
12 | 160486317081673 |
13 | 11218516998346216 |
14 | 884855465842682269 |
15 | 78106000651400369100 |
16 | 7660758993518625156050 |
17 | 829683453926089044978468 |
[1,1,2,12,120,1750,34615,882868,28008694, 1076404824,49100939538,2615329877358, 160486317081673,11218516998346216, 884855465842682269,78106000651400369100, 7660758993518625156050,829683453926089044978468] |