n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 52 |
6 | 203 |
7 | 877 |
8 | 4140 |
9 | 21147 |
10 | 94828 |
11 | 389946 |
12 | 1527058 |
13 | 5846917 |
14 | 22257299 |
15 | 85116719 |
16 | 329147169 |
17 | 1292371138 |
18 | 5165744159 |
19 | 20781403539 |
20 | 83617668276 |
21 | 335483033770 |
22 | 1340729704086 |
23 | 5338181115652 |
24 | 21193583922048 |
25 | 84001778063348 |
26 | 332811761809618 |
[1,1,2,5,15,52,203,877,4140,21147,94828,389946, 1527058,5846917,22257299,85116719,329147169, 1292371138,5165744159,20781403539,83617668276, 335483033770,1340729704086,5338181115652, 21193583922048,84001778063348,332811761809618] |