Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 25 |
6 | 71 |
7 | 205 |
8 | 607 |
9 | 1833 |
10 | 5635 |
11 | 17577 |
12 | 55515 |
13 | 177191 |
14 | 570699 |
15 | 1852571 |
16 | 6055079 |
17 | 19910729 |
18 | 65823751 |
19 | 218654099 |
20 | 729459551 |
21 | 2443051213 |
22 | 8210993363 |
23 | 27685671843 |
24 | 93625082139 |
25 | 317470233149 |
26 | 1079183930827 |
27 | 3676951654519 |
28 | 12554734605495 |
29 | 42952566314235 |
[0,0,1,3,9,25,71,205,607,1833,5635,17577,55515, 177191,570699,1852571,6055079,19910729,65823751, 218654099,729459551,2443051213,8210993363, 27685671843,93625082139,317470233149, 1079183930827,3676951654519,12554734605495, 42952566314235] |