n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 40 |
4 | 160 |
5 | 280 |
6 | 2176 |
7 | 2800 |
8 | 17920 |
9 | 44224 |
10 | 263296 |
11 | 419872 |
12 | 4280320 |
13 | 5594000 |
14 | 44751616 |
15 | 134391040 |
16 | 539054080 |
17 | 1073758360 |
18 | 11453771776 |
19 | 15271054960 |
20 | 137575813120 |
21 | 366528038400 |
22 | 1759220283904 |
23 | 3198580043440 |
24 | 35193817661440 |
25 | 56294998751872 |
[4,16,40,160,280,2176,2800,17920,44224,263296, 419872,4280320,5594000,44751616,134391040, 539054080,1073758360,11453771776,15271054960, 137575813120,366528038400,1759220283904, 3198580043440,35193817661440,56294998751872] |