n | a(n) |
---|---|
5 | 1 |
6 | 48 |
7 | 1540 |
8 | 41664 |
9 | 1028790 |
10 | 24040016 |
11 | 541931236 |
12 | 11919192480 |
13 | 257575523205 |
14 | 5494563394320 |
15 | 116068178638776 |
16 | 2433440563030400 |
17 | 50718300243156000 |
18 | 1052134368066259632 |
19 | 21743950029947469800 |
[1,48,1540,41664,1028790,24040016,541931236, 11919192480,257575523205,5494563394320, 116068178638776,2433440563030400, 50718300243156000,1052134368066259632, 21743950029947469800] |