n | a(n) |
---|---|
0 | 3 |
1 | 21 |
2 | 112 |
3 | 504 |
4 | 2016 |
5 | 7392 |
6 | 25344 |
7 | 82368 |
8 | 256256 |
9 | 768768 |
10 | 2236416 |
11 | 6336512 |
12 | 17547264 |
13 | 47628288 |
14 | 127008768 |
15 | 333398016 |
16 | 862912512 |
17 | 2205220864 |
18 | 5571084288 |
19 | 13927710720 |
20 | 34487664640 |
21 | 84651540480 |
22 | 206108098560 |
23 | 498094571520 |
[3,21,112,504,2016,7392,25344,82368,256256,768768, 2236416,6336512,17547264,47628288,127008768, 333398016,862912512,2205220864,5571084288, 13927710720,34487664640,84651540480,206108098560, 498094571520] |