n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 12 |
5 | 10 |
6 | 30 |
7 | 105 |
8 | 56 |
9 | 252 |
10 | 1260 |
11 | 330 |
12 | 1980 |
13 | 2574 |
14 | 2002 |
15 | 15015 |
16 | 240240 |
17 | 61880 |
18 | 15912 |
19 | 151164 |
20 | 38760 |
21 | 406980 |
22 | 4476780 |
23 | 1144066 |
24 | 13728792 |
25 | 24515700 |
26 | 6249100 |
27 | 84362850 |
28 | 21474180 |
29 | 5462730 |
30 | 81940950 |
31 | 1270084725 |
32 | 645122400 |
[1,1,2,3,12,10,30,105,56,252,1260,330,1980,2574, 2002,15015,240240,61880,15912,151164,38760,406980, 4476780,1144066,13728792,24515700,6249100, 84362850,21474180,5462730,81940950,1270084725, 645122400] |