n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 41 |
6 | 120 |
7 | 389 |
8 | 1251 |
9 | 4137 |
10 | 13853 |
11 | 46808 |
12 | 159861 |
13 | 550275 |
14 | 1905212 |
15 | 6634122 |
16 | 23214226 |
17 | 81553913 |
18 | 287563509 |
19 | 1017218432 |
20 | 3608376287 |
21 | 12832434230 |
22 | 45739760100 |
23 | 163366352143 |
24 | 584561531878 |
25 | 2095201468853 |
26 | 7521163557074 |
27 | 27036493662583 |
28 | 97313177034670 |
[1,1,2,5,13,41,120,389,1251,4137,13853,46808, 159861,550275,1905212,6634122,23214226,81553913, 287563509,1017218432,3608376287,12832434230, 45739760100,163366352143,584561531878, 2095201468853,7521163557074,27036493662583, 97313177034670] |