n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 116 |
5 | 3212 |
6 | 209152 |
7 | 32133552 |
8 | 11631456480 |
9 | 9922509270288 |
10 | 19946786274879008 |
11 | 94492874103638971552 |
12 | 1054865198752147761744448 |
[1,1,2,10,116,3212,209152,32133552,11631456480, 9922509270288,19946786274879008, 94492874103638971552,1054865198752147761744448] |