n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 19 |
6 | 47 |
7 | 134 |
8 | 357 |
9 | 1031 |
10 | 2912 |
11 | 8612 |
12 | 25007 |
13 | 75378 |
14 | 223884 |
15 | 683915 |
16 | 2067578 |
17 | 6376800 |
18 | 19503546 |
19 | 60749341 |
20 | 187592661 |
21 | 587938043 |
22 | 1831377952 |
23 | 5773159368 |
24 | 18092820941 |
25 | 57328904204 |
26 | 180657986051 |
27 | 574735018826 |
28 | 1820143698295 |
29 | 5810522774503 |
30 | 18473074695503 |
[1,1,3,7,19,47,134,357,1031,2912,8612,25007,75378, 223884,683915,2067578,6376800,19503546,60749341, 187592661,587938043,1831377952,5773159368, 18092820941,57328904204,180657986051,574735018826, 1820143698295,5810522774503,18473074695503] |