n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 28 |
3 | 144 |
4 | 752 |
5 | 3936 |
6 | 20608 |
7 | 107904 |
8 | 564992 |
9 | 2958336 |
10 | 15490048 |
11 | 81106944 |
12 | 424681472 |
13 | 2223661056 |
14 | 11643240448 |
15 | 60964798464 |
16 | 319215828992 |
17 | 1671435780096 |
18 | 8751751364608 |
19 | 45824765067264 |
20 | 239941584945152 |
21 | 1256350449401856 |
22 | 6578336356630528 |
23 | 34444616342175744 |
[2,6,28,144,752,3936,20608,107904,564992,2958336, 15490048,81106944,424681472,2223661056, 11643240448,60964798464,319215828992, 1671435780096,8751751364608,45824765067264, 239941584945152,1256350449401856,6578336356630528, 34444616342175744] |