n | a(n) |
---|---|
1 | 3 |
2 | 9 |
3 | 39 |
4 | 121 |
5 | 443 |
6 | 1521 |
7 | 5071 |
8 | 17161 |
9 | 58035 |
10 | 196249 |
11 | 664183 |
12 | 2247001 |
13 | 7601259 |
14 | 25715041 |
15 | 86992799 |
16 | 294294025 |
17 | 995591267 |
18 | 3368061225 |
19 | 11394069191 |
20 | 38545861561 |
21 | 130399710235 |
22 | 441139057489 |
23 | 1492362749807 |
24 | 5048627017225 |
25 | 17079382868243 |
26 | 57779138385081 |
27 | 195465425009943 |
[3,9,39,121,443,1521,5071,17161,58035,196249, 664183,2247001,7601259,25715041,86992799, 294294025,995591267,3368061225,11394069191, 38545861561,130399710235,441139057489, 1492362749807,5048627017225,17079382868243, 57779138385081,195465425009943] |