n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 33 |
4 | 232 |
5 | 2045 |
6 | 21636 |
7 | 267043 |
8 | 3766848 |
9 | 59776137 |
10 | 1053986500 |
11 | 20442543671 |
12 | 432537117552 |
13 | 9914571191005 |
14 | 244742376434388 |
15 | 6473030199939675 |
16 | 182614314495736576 |
17 | 5473825396372806545 |
18 | 173728330742517310980 |
[1,2,6,33,232,2045,21636,267043,3766848,59776137, 1053986500,20442543671,432537117552,9914571191005, 244742376434388,6473030199939675, 182614314495736576,5473825396372806545, 173728330742517310980] |