n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 10 |
3 | 32 |
4 | 98 |
5 | 307 |
6 | 962 |
7 | 3021 |
8 | 9489 |
9 | 29810 |
10 | 93649 |
11 | 294205 |
12 | 924270 |
13 | 2903678 |
14 | 9122172 |
15 | 28658146 |
16 | 90032221 |
17 | 282844564 |
18 | 888582404 |
19 | 2791563950 |
20 | 8769956797 |
21 | 27551631843 |
22 | 86556004192 |
23 | 271923706894 |
24 | 854273519914 |
25 | 2683779414318 |
26 | 8431341691877 |
27 | 26487841119104 |
[1,4,10,32,98,307,962,3021,9489,29810,93649, 294205,924270,2903678,9122172,28658146,90032221, 282844564,888582404,2791563950,8769956797, 27551631843,86556004192,271923706894,854273519914, 2683779414318,8431341691877,26487841119104] |