n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 40 |
4 | 144 |
5 | 448 |
6 | 1280 |
7 | 3456 |
8 | 8960 |
9 | 22528 |
10 | 55296 |
11 | 133120 |
12 | 315392 |
13 | 737280 |
14 | 1703936 |
15 | 3899392 |
16 | 8847360 |
17 | 19922944 |
18 | 44564480 |
19 | 99090432 |
20 | 219152384 |
21 | 482344960 |
22 | 1056964608 |
23 | 2306867200 |
24 | 5016387584 |
25 | 10871635968 |
26 | 23488102400 |
[1,2,8,40,144,448,1280,3456,8960,22528,55296, 133120,315392,737280,1703936,3899392,8847360, 19922944,44564480,99090432,219152384,482344960, 1056964608,2306867200,5016387584,10871635968, 23488102400] |