n | a(n) |
---|---|
9 | 9 |
10 | 11430 |
11 | 2994750 |
12 | 405167400 |
13 | 38104981200 |
14 | 2861947408320 |
15 | 185364917337600 |
16 | 10851787634688000 |
17 | 592181546628672000 |
18 | 30766166997261696000 |
19 | 1544883657843618892800 |
20 | 75806672148355180032000 |
[9,11430,2994750,405167400,38104981200, 2861947408320,185364917337600,10851787634688000, 592181546628672000,30766166997261696000, 1544883657843618892800,75806672148355180032000] |