n | a(n) |
---|---|
5 | 1 |
6 | 12 |
7 | 84 |
8 | 448 |
9 | 2016 |
10 | 8064 |
11 | 29568 |
12 | 101376 |
13 | 329472 |
14 | 1025024 |
15 | 3075072 |
16 | 8945664 |
17 | 25346048 |
18 | 70189056 |
19 | 190513152 |
20 | 508035072 |
21 | 1333592064 |
22 | 3451650048 |
23 | 8820883456 |
24 | 22284337152 |
25 | 55710842880 |
26 | 137950658560 |
27 | 338606161920 |
[1,12,84,448,2016,8064,29568,101376,329472, 1025024,3075072,8945664,25346048,70189056, 190513152,508035072,1333592064,3451650048, 8820883456,22284337152,55710842880,137950658560, 338606161920] |