n | a(n) |
---|---|
4 | 1 |
5 | 20 |
6 | 276 |
7 | 3276 |
8 | 35960 |
9 | 376992 |
10 | 3838380 |
11 | 38320568 |
12 | 377348994 |
13 | 3679075400 |
14 | 35607051480 |
15 | 342700125300 |
16 | 3284214703056 |
17 | 31368725759168 |
18 | 298824321028320 |
19 | 2840671544105280 |
20 | 26958221130508525 |
21 | 255485622301674660 |
[1,20,276,3276,35960,376992,3838380,38320568, 377348994,3679075400,35607051480,342700125300, 3284214703056,31368725759168,298824321028320, 2840671544105280,26958221130508525, 255485622301674660] |