Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 34 |
6 | 116 |
7 | 792 |
8 | 4752 |
9 | 32304 |
10 | 202320 |
11 | 1991952 |
12 | 17927568 |
13 | 175473216 |
14 | 1613364480 |
15 | 20695108608 |
16 | 248341303296 |
17 | 3173837230080 |
18 | 38575603814400 |
19 | 610011772416000 |
20 | 9150176586240000 |
21 | 144343174487040000 |
22 | 2183607168215040000 |
[1,1,3,9,34,116,792,4752,32304,202320,1991952, 17927568,175473216,1613364480,20695108608, 248341303296,3173837230080,38575603814400, 610011772416000,9150176586240000, 144343174487040000,2183607168215040000] |