n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 31 |
3 | 113 |
4 | 374 |
5 | 1178 |
6 | 3618 |
7 | 10974 |
8 | 33087 |
9 | 99481 |
10 | 298729 |
11 | 896551 |
12 | 2690108 |
13 | 8070884 |
14 | 24213332 |
15 | 72640812 |
16 | 217923405 |
17 | 653771355 |
18 | 1961315395 |
19 | 5883947725 |
20 | 17651844946 |
21 | 52955536862 |
22 | 158866612886 |
23 | 476599841258 |
24 | 1429799526699 |
[1,7,31,113,374,1178,3618,10974,33087,99481, 298729,896551,2690108,8070884,24213332,72640812, 217923405,653771355,1961315395,5883947725, 17651844946,52955536862,158866612886,476599841258, 1429799526699] |