n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 36 |
5 | 376 |
6 | 6040 |
7 | 137320 |
8 | 4188320 |
9 | 164844064 |
10 | 8129435904 |
11 | 490812707456 |
12 | 35601674684160 |
13 | 3054648986802432 |
14 | 305980722047302144 |
15 | 35383891435049320960 |
16 | 4678354778386866393088 |
17 | 701273672223926436540416 |
18 | 118292442535368693562662912 |
[1,1,2,6,36,376,6040,137320,4188320,164844064, 8129435904,490812707456,35601674684160, 3054648986802432,305980722047302144, 35383891435049320960,4678354778386866393088, 701273672223926436540416, 118292442535368693562662912] |