n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 25 |
4 | 69 |
5 | 189 |
6 | 517 |
7 | 1413 |
8 | 3861 |
9 | 10549 |
10 | 28821 |
11 | 78741 |
12 | 215125 |
13 | 587733 |
14 | 1605717 |
15 | 4386901 |
16 | 11985237 |
17 | 32744277 |
18 | 89459029 |
19 | 244406613 |
20 | 667731285 |
21 | 1824275797 |
22 | 4984014165 |
23 | 13616579925 |
24 | 37201188181 |
25 | 101635536213 |
26 | 277673448789 |
27 | 758617970005 |
28 | 2072582837589 |
29 | 5662401615189 |
[1,3,9,25,69,189,517,1413,3861,10549,28821,78741, 215125,587733,1605717,4386901,11985237,32744277, 89459029,244406613,667731285,1824275797, 4984014165,13616579925,37201188181,101635536213, 277673448789,758617970005,2072582837589, 5662401615189] |