n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 8 |
8 | 23 |
9 | 61 |
10 | 183 |
11 | 609 |
12 | 3021 |
13 | 17551 |
14 | 122559 |
15 | 936997 |
16 | 8112490 |
17 | 77983308 |
18 | 921842339 |
19 | 13073413646 |
20 | 221502161483 |
21 | 4341535999765 |
22 | 98829117614873 |
23 | 2578684019463460 |
24 | 79032276911025441 |
[1,1,1,1,1,3,8,23,61,183,609,3021,17551,122559, 936997,8112490,77983308,921842339,13073413646, 221502161483,4341535999765,98829117614873, 2578684019463460,79032276911025441] |