n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 120 |
4 | 1610 |
5 | 25956 |
6 | 474012 |
7 | 9475752 |
8 | 202921290 |
9 | 4587734580 |
10 | 108376022040 |
11 | 2654745191280 |
12 | 67043341981980 |
13 | 1737717447946200 |
14 | 46062204663294000 |
15 | 1245096242017227360 |
16 | 34239776369652506970 |
17 | 956050033694583839220 |
[1,2,12,120,1610,25956,474012,9475752,202921290, 4587734580,108376022040,2654745191280, 67043341981980,1737717447946200,46062204663294000, 1245096242017227360,34239776369652506970, 956050033694583839220] |