n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 8 |
4 | 23 |
5 | 69 |
6 | 208 |
7 | 636 |
8 | 1963 |
9 | 6099 |
10 | 19059 |
11 | 59836 |
12 | 188576 |
13 | 596252 |
14 | 1890548 |
15 | 6008908 |
16 | 19139155 |
17 | 61074583 |
18 | 195217253 |
19 | 624913284 |
20 | 2003090071 |
21 | 6428430129 |
22 | 20653101216 |
23 | 66420162952 |
24 | 213802390264 |
25 | 688796847976 |
26 | 2220789746752 |
27 | 7165331870036 |
[1,3,8,23,69,208,636,1963,6099,19059,59836,188576, 596252,1890548,6008908,19139155,61074583, 195217253,624913284,2003090071,6428430129, 20653101216,66420162952,213802390264,688796847976, 2220789746752,7165331870036] |