n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 33 |
5 | 456 |
6 | 9460 |
7 | 274800 |
8 | 10643745 |
9 | 530052880 |
10 | 32995478376 |
11 | 2510382661920 |
12 | 229195817258100 |
13 | 24730000147369440 |
14 | 3113066087894608560 |
15 | 452168671458789789504 |
16 | 75059305956331837485345 |
17 | 14121026957032156557396000 |
18 | 2988687741694684876495689040 |
[0,1,1,4,33,456,9460,274800,10643745,530052880, 32995478376,2510382661920,229195817258100, 24730000147369440,3113066087894608560, 452168671458789789504,75059305956331837485345, 14121026957032156557396000, 2988687741694684876495689040] |