Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 0 |
6 | 5 |
7 | 63 |
8 | 476 |
9 | 2772 |
10 | 13680 |
11 | 60060 |
12 | 241472 |
13 | 906048 |
14 | 3214848 |
15 | 10890880 |
16 | 35481600 |
17 | 111794176 |
18 | 342171648 |
19 | 1021031424 |
20 | 2979102720 |
21 | 8520171520 |
22 | 23934468096 |
23 | 66156625920 |
24 | 180198047744 |
25 | 484304486400 |
26 | 1285790105600 |
27 | 3375480176640 |
28 | 8769899593728 |
29 | 22567515586560 |
30 | 57557594931200 |
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