n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 12 |
4 | 45 |
5 | 162 |
6 | 567 |
7 | 1944 |
8 | 6561 |
9 | 21870 |
10 | 72171 |
11 | 236196 |
12 | 767637 |
13 | 2480058 |
14 | 7971615 |
15 | 25509168 |
16 | 81310473 |
17 | 258280326 |
18 | 817887699 |
19 | 2582803260 |
20 | 8135830269 |
21 | 25569752274 |
22 | 80196041223 |
23 | 251048476872 |
24 | 784526490225 |
25 | 2447722649502 |
[1,3,12,45,162,567,1944,6561,21870,72171,236196, 767637,2480058,7971615,25509168,81310473, 258280326,817887699,2582803260,8135830269, 25569752274,80196041223,251048476872,784526490225, 2447722649502] |