n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 24 |
3 | 176 |
4 | 1504 |
5 | 14528 |
6 | 155520 |
7 | 1819392 |
8 | 23019008 |
9 | 312413184 |
10 | 4518705152 |
11 | 69279690752 |
12 | 1120856170496 |
13 | 19062628335616 |
14 | 339681346551808 |
15 | 6323658075340800 |
16 | 122680376836358144 |
17 | 2474677219852288000 |
18 | 51799971194270646272 |
19 | 1123121391647711035392 |
[1,4,24,176,1504,14528,155520,1819392,23019008, 312413184,4518705152,69279690752,1120856170496, 19062628335616,339681346551808,6323658075340800, 122680376836358144,2474677219852288000, 51799971194270646272,1123121391647711035392] |