n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 25 |
4 | 64 |
5 | 159 |
6 | 389 |
7 | 945 |
8 | 2289 |
9 | 5534 |
10 | 13369 |
11 | 32285 |
12 | 77953 |
13 | 188206 |
14 | 454381 |
15 | 1096985 |
16 | 2648369 |
17 | 6393742 |
18 | 15435873 |
19 | 37265509 |
20 | 89966913 |
21 | 217199358 |
22 | 524365653 |
23 | 1265930690 |
[1,3,9,25,64,159,389,945,2289,5534,13369,32285, 77953,188206,454381,1096985,2648369,6393742, 15435873,37265509,89966913,217199358,524365653, 1265930690] |