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 | 1 |
7 | 1 |
8 | 1 |
9 | 1 |
10 | 2 |
11 | 4 |
12 | 13 |
13 | 35 |
14 | 87 |
15 | 286 |
16 | 908 |
17 | 4080 |
18 | 23994 |
19 | 186034 |
20 | 1891698 |
[1,1,1,1,1,1,1,1,1,2,4,13,35,87,286,908,4080, 23994,186034,1891698] |