n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 119 |
6 | 708 |
7 | 4914 |
8 | 38976 |
9 | 347765 |
10 | 3447712 |
11 | 37598286 |
12 | 447294144 |
13 | 5764747515 |
14 | 80011430240 |
15 | 1189835682714 |
16 | 18873422539776 |
17 | 318085061976105 |
18 | 5676223254661760 |
19 | 106919460527212950 |
20 | 2119973556022047744 |
21 | 44136046410218669055 |
22 | 962630898723772565760 |
[1,1,2,6,24,119,708,4914,38976,347765,3447712, 37598286,447294144,5764747515,80011430240, 1189835682714,18873422539776,318085061976105, 5676223254661760,106919460527212950, 2119973556022047744,44136046410218669055, 962630898723772565760] |