n | a(n) |
---|---|
0 | 3 |
1 | 1 |
2 | 7 |
3 | 13 |
4 | 35 |
5 | 81 |
6 | 199 |
7 | 477 |
8 | 1155 |
9 | 2785 |
10 | 6727 |
11 | 16237 |
12 | 39203 |
13 | 94641 |
14 | 228487 |
15 | 551613 |
16 | 1331715 |
17 | 3215041 |
18 | 7761799 |
19 | 18738637 |
20 | 45239075 |
21 | 109216785 |
22 | 263672647 |
23 | 636562077 |
24 | 1536796803 |
25 | 3710155681 |
26 | 8957108167 |
27 | 21624372013 |
28 | 52205852195 |
[3,1,7,13,35,81,199,477,1155,2785,6727,16237, 39203,94641,228487,551613,1331715,3215041,7761799, 18738637,45239075,109216785,263672647,636562077, 1536796803,3710155681,8957108167,21624372013, 52205852195] |