n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 21 |
3 | 81 |
4 | 297 |
5 | 1053 |
6 | 3645 |
7 | 12393 |
8 | 41553 |
9 | 137781 |
10 | 452709 |
11 | 1476225 |
12 | 4782969 |
13 | 15411789 |
14 | 49424013 |
15 | 157837977 |
16 | 502211745 |
17 | 1592728677 |
18 | 5036466357 |
19 | 15884240049 |
20 | 49977243081 |
21 | 156905298045 |
22 | 491636600541 |
23 | 1537671920841 |
[1,5,21,81,297,1053,3645,12393,41553,137781, 452709,1476225,4782969,15411789,49424013, 157837977,502211745,1592728677,5036466357, 15884240049,49977243081,156905298045,491636600541, 1537671920841] |