n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 47 |
3 | 131 |
4 | 343 |
5 | 863 |
6 | 2111 |
7 | 5055 |
8 | 11903 |
9 | 27647 |
10 | 63487 |
11 | 144383 |
12 | 325631 |
13 | 729087 |
14 | 1622015 |
15 | 3588095 |
16 | 7897087 |
17 | 17301503 |
18 | 37748735 |
19 | 82051071 |
20 | 177733631 |
21 | 383778815 |
22 | 826277887 |
23 | 1774190591 |
24 | 3800039423 |
25 | 8120172543 |
26 | 17314086911 |
27 | 36842766335 |
28 | 78248935423 |
[1,15,47,131,343,863,2111,5055,11903,27647,63487, 144383,325631,729087,1622015,3588095,7897087, 17301503,37748735,82051071,177733631,383778815, 826277887,1774190591,3800039423,8120172543, 17314086911,36842766335,78248935423] |