n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 31 |
4 | 95 |
5 | 288 |
6 | 869 |
7 | 2615 |
8 | 7858 |
9 | 23595 |
10 | 70819 |
11 | 212512 |
12 | 637625 |
13 | 1913019 |
14 | 5739290 |
15 | 17218247 |
16 | 51655351 |
17 | 154967040 |
18 | 464902717 |
19 | 1394710735 |
20 | 4184136386 |
21 | 12552415923 |
22 | 37657258715 |
23 | 112971793856 |
24 | 338915410225 |
25 | 1016746277043 |
[1,3,10,31,95,288,869,2615,7858,23595,70819, 212512,637625,1913019,5739290,17218247,51655351, 154967040,464902717,1394710735,4184136386, 12552415923,37657258715,112971793856,338915410225, 1016746277043] |