Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 5 |
7 | 21 |
8 | 61 |
9 | 266 |
10 | 891 |
11 | 3074 |
12 | 18035 |
13 | 122510 |
14 | 915879 |
15 | 8736750 |
16 | 97430523 |
17 | 1219777035 |
18 | 17287269221 |
[1,1,1,1,1,5,21,61,266,891,3074,18035,122510, 915879,8736750,97430523,1219777035,17287269221] |