n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 40 |
3 | 168 |
4 | 648 |
5 | 2376 |
6 | 8424 |
7 | 29160 |
8 | 99144 |
9 | 332424 |
10 | 1102248 |
11 | 3621672 |
12 | 11809800 |
13 | 38263752 |
14 | 123294312 |
15 | 395392104 |
16 | 1262703816 |
17 | 4017693960 |
18 | 12741829416 |
19 | 40291730856 |
20 | 127073920392 |
21 | 399817944648 |
22 | 1255242384360 |
23 | 3933092804328 |
[1,8,40,168,648,2376,8424,29160,99144,332424, 1102248,3621672,11809800,38263752,123294312, 395392104,1262703816,4017693960,12741829416, 40291730856,127073920392,399817944648, 1255242384360,3933092804328] |