Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 19 |
4 | 68 |
5 | 253 |
6 | 982 |
7 | 3904 |
8 | 15904 |
9 | 65870 |
10 | 276702 |
11 | 1176029 |
12 | 5049443 |
13 | 21864431 |
14 | 95369300 |
15 | 418700058 |
16 | 1848734071 |
17 | 8204001286 |
18 | 36570660638 |
19 | 163685587764 |
20 | 735324507172 |
21 | 3314279623363 |
22 | 14983732949119 |
23 | 67929967517380 |
24 | 308753250967957 |
25 | 1406646255864308 |
26 | 6422545729056850 |
27 | 29383868785665040 |
[1,2,6,19,68,253,982,3904,15904,65870,276702, 1176029,5049443,21864431,95369300,418700058, 1848734071,8204001286,36570660638,163685587764, 735324507172,3314279623363,14983732949119, 67929967517380,308753250967957,1406646255864308, 6422545729056850,29383868785665040] |