n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 7 |
3 | 19 |
4 | 51 |
5 | 141 |
6 | 393 |
7 | 1107 |
8 | 3139 |
9 | 8955 |
10 | 25675 |
11 | 73945 |
12 | 213825 |
13 | 620595 |
14 | 1807263 |
15 | 5279283 |
16 | 15465139 |
17 | 45420261 |
18 | 133708777 |
19 | 394446691 |
20 | 1165855131 |
21 | 3451793403 |
22 | 10235554347 |
23 | 30392965809 |
24 | 90357645121 |
25 | 268922897571 |
26 | 801139867063 |
27 | 2388683219347 |
28 | 7127469430899 |
[1,3,7,19,51,141,393,1107,3139,8955,25675,73945, 213825,620595,1807263,5279283,15465139,45420261, 133708777,394446691,1165855131,3451793403, 10235554347,30392965809,90357645121,268922897571, 801139867063,2388683219347,7127469430899] |