n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 16 |
6 | 136 |
7 | 736 |
8 | 4096 |
9 | 20224 |
10 | 99856 |
11 | 475696 |
12 | 3889216 |
13 | 31778176 |
14 | 313696384 |
15 | 2709911296 |
16 | 23006784256 |
17 | 179965340416 |
18 | 1532217039616 |
19 | 13081112406784 |
20 | 147235213351936 |
21 | 1657791879049216 |
22 | 20132199908571136 |
23 | 226466449808367616 |
24 | 2542933338768769024 |
[1,1,1,1,4,16,136,736,4096,20224,99856,475696, 3889216,31778176,313696384,2709911296,23006784256, 179965340416,1532217039616,13081112406784, 147235213351936,1657791879049216, 20132199908571136,226466449808367616, 2542933338768769024] |