n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 17 |
5 | 102 |
6 | 811 |
7 | 6626 |
8 | 58385 |
9 | 532251 |
10 | 5011934 |
11 | 48344880 |
12 | 475982471 |
13 | 4766639628 |
14 | 48434621610 |
15 | 498363430232 |
16 | 5184274255789 |
17 | 54451326151253 |
18 | 576810990484823 |
19 | 6156943228387305 |
20 | 66170786572330174 |
21 | 715564777086617766 |
[1,1,1,3,17,102,811,6626,58385,532251,5011934, 48344880,475982471,4766639628,48434621610, 498363430232,5184274255789,54451326151253, 576810990484823,6156943228387305, 66170786572330174,715564777086617766] |