n | a(n) |
---|---|
1 | 3 |
2 | 36 |
3 | 126 |
4 | 504 |
5 | 1872 |
6 | 7200 |
7 | 27360 |
8 | 104256 |
9 | 397440 |
10 | 1513728 |
11 | 5769216 |
12 | 21980160 |
13 | 83755008 |
14 | 319131648 |
15 | 1215995904 |
16 | 4633362432 |
17 | 17654611968 |
18 | 67270017024 |
19 | 256320995328 |
20 | 976668327936 |
21 | 3721430827008 |
22 | 14179888005120 |
23 | 54030086701056 |
[3,36,126,504,1872,7200,27360,104256,397440, 1513728,5769216,21980160,83755008,319131648, 1215995904,4633362432,17654611968,67270017024, 256320995328,976668327936,3721430827008, 14179888005120,54030086701056] |