n | a(n) |
---|---|
10 | 0 |
11 | 19200 |
12 | 947760 |
13 | 49680576 |
14 | 1744142400 |
15 | 60169824000 |
16 | 1646888944800 |
17 | 42633973724160 |
18 | 1013373907056960 |
19 | 22797317814635520 |
20 | 502986050203680000 |
21 | 10556482426015426560 |
22 | 222685725334400064000 |
23 | 4535040919258899456000 |
24 | 92995172484979478630400 |
25 | 1880492299058130490163200 |
[0,19200,947760,49680576,1744142400,60169824000, 1646888944800,42633973724160,1013373907056960, 22797317814635520,502986050203680000, 10556482426015426560,222685725334400064000, 4535040919258899456000,92995172484979478630400, 1880492299058130490163200] |