Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 36 |
4 | 720 |
5 | 23400 |
6 | 1123200 |
7 | 74440800 |
8 | 6509318400 |
9 | 725829724800 |
10 | 100511918784000 |
11 | 16922530756454400 |
12 | 3404178048774758400 |
13 | 806369627582929612800 |
14 | 222159405758654317363200 |
15 | 70435689828806256514560000 |
16 | 25463217531292911649057996800 |
17 | 10411540182139235537714555289600 |
[1,1,4,36,720,23400,1123200,74440800,6509318400, 725829724800,100511918784000,16922530756454400, 3404178048774758400,806369627582929612800, 222159405758654317363200, 70435689828806256514560000, 25463217531292911649057996800, 10411540182139235537714555289600] |