n | a(n) |
---|---|
1 | 5 |
2 | 15 |
3 | 45 |
4 | 135 |
5 | 405 |
6 | 1213 |
7 | 3627 |
8 | 10846 |
9 | 32429 |
10 | 96970 |
11 | 289870 |
12 | 866499 |
13 | 2590128 |
14 | 7742621 |
15 | 23144448 |
16 | 69183744 |
17 | 206804024 |
18 | 618180094 |
19 | 1847865864 |
20 | 5523643627 |
21 | 16511274210 |
22 | 49355507149 |
23 | 147533484214 |
24 | 441007079909 |
25 | 1318258258809 |
[5,15,45,135,405,1213,3627,10846,32429,96970, 289870,866499,2590128,7742621,23144448,69183744, 206804024,618180094,1847865864,5523643627, 16511274210,49355507149,147533484214,441007079909, 1318258258809] |