n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 10 |
4 | 24 |
5 | 48 |
6 | 114 |
7 | 228 |
8 | 540 |
9 | 1080 |
10 | 2558 |
11 | 5116 |
12 | 12133 |
13 | 24266 |
14 | 57658 |
15 | 115316 |
16 | 274600 |
17 | 549200 |
18 | 1310817 |
19 | 2621634 |
20 | 6271788 |
21 | 12543576 |
22 | 30076629 |
23 | 60153258 |
24 | 144550655 |
25 | 289101310 |
26 | 696176322 |
27 | 1392352644 |
28 | 3359516328 |
[1,2,5,10,24,48,114,228,540,1080,2558,5116,12133, 24266,57658,115316,274600,549200,1310817,2621634, 6271788,12543576,30076629,60153258,144550655, 289101310,696176322,1392352644,3359516328] |