Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
3 | 1 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 2 |
8 | 6 |
9 | 14 |
10 | 44 |
11 | 163 |
12 | 722 |
13 | 3683 |
14 | 21555 |
15 | 141664 |
16 | 1035272 |
17 | 8334650 |
18 | 73511721 |
19 | 707535039 |
[1,0,0,1,2,6,14,44,163,722,3683,21555,141664, 1035272,8334650,73511721,707535039] |