n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 11 |
5 | 29 |
6 | 77 |
7 | 211 |
8 | 582 |
9 | 1618 |
10 | 4539 |
11 | 12805 |
12 | 36306 |
13 | 103400 |
14 | 295576 |
15 | 847661 |
16 | 2437880 |
17 | 7028919 |
18 | 20310976 |
19 | 58808175 |
20 | 170577566 |
21 | 495574655 |
22 | 1441899589 |
23 | 4200913967 |
24 | 12254244406 |
25 | 35786588014 |
26 | 104618152761 |
27 | 306135037294 |
[1,1,2,4,11,29,77,211,582,1618,4539,12805,36306, 103400,295576,847661,2437880,7028919,20310976, 58808175,170577566,495574655,1441899589, 4200913967,12254244406,35786588014,104618152761, 306135037294] |