n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 13 |
6 | 356 |
7 | 3126 |
8 | 28691 |
9 | 70268 |
10 | 271396 |
11 | 6534495 |
12 | 64591632 |
13 | 162057126 |
14 | 26237436541 |
15 | 66438353080 |
16 | 7020479040553 |
17 | 11201604625686 |
18 | 296414282891996 |
19 | 32360305554728271 |
20 | 339791857819043616 |
21 | 871053578019254406 |
22 | 5731478440138170841 |
23 | 9181907843495831675 |
[0,1,2,6,13,356,3126,28691,70268,271396,6534495, 64591632,162057126,26237436541,66438353080, 7020479040553,11201604625686,296414282891996, 32360305554728271,339791857819043616, 871053578019254406,5731478440138170841, 9181907843495831675] |