n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | 14 |
4 | 41 |
5 | 127 |
6 | 386 |
7 | 1181 |
8 | 3605 |
9 | 11013 |
10 | 33635 |
11 | 102734 |
12 | 313780 |
13 | 958385 |
14 | 2927208 |
15 | 8940618 |
16 | 27307464 |
17 | 83405606 |
18 | 254747013 |
19 | 778077691 |
20 | 2376494562 |
21 | 7258563605 |
22 | 22169941573 |
23 | 67713990833 |
24 | 206819875427 |
25 | 631693101322 |
26 | 1929389878184 |
[2,4,14,41,127,386,1181,3605,11013,33635,102734, 313780,958385,2927208,8940618,27307464,83405606, 254747013,778077691,2376494562,7258563605, 22169941573,67713990833,206819875427,631693101322, 1929389878184] |