n | a(n) |
---|---|
1 | 2 |
2 | 12 |
3 | 40 |
4 | 176 |
5 | 672 |
6 | 2752 |
7 | 10880 |
8 | 43776 |
9 | 174592 |
10 | 699392 |
11 | 2795520 |
12 | 11186176 |
13 | 44736512 |
14 | 178962432 |
15 | 715816960 |
16 | 2863333376 |
17 | 11453202432 |
18 | 45813071872 |
19 | 183251763200 |
20 | 733008101376 |
[2,12,40,176,672,2752,10880,43776,174592,699392, 2795520,11186176,44736512,178962432,715816960, 2863333376,11453202432,45813071872,183251763200, 733008101376] |