n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 36 |
6 | 108 |
7 | 324 |
8 | 972 |
9 | 2916 |
10 | 8748 |
11 | 26244 |
12 | 78732 |
13 | 236196 |
14 | 708588 |
15 | 2125764 |
16 | 6377292 |
17 | 19131876 |
18 | 57395628 |
19 | 172186884 |
20 | 516560652 |
21 | 1549681956 |
22 | 4649045868 |
23 | 13947137604 |
24 | 41841412812 |
25 | 125524238436 |
26 | 376572715308 |
27 | 1129718145924 |
[1,2,4,12,36,108,324,972,2916,8748,26244,78732, 236196,708588,2125764,6377292,19131876,57395628, 172186884,516560652,1549681956,4649045868, 13947137604,41841412812,125524238436,376572715308, 1129718145924] |