n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 16 |
4 | 66 |
5 | 352 |
6 | 2431 |
7 | 21760 |
8 | 252586 |
9 | 3803648 |
10 | 74327145 |
11 | 1885102080 |
12 | 62062015500 |
13 | 2652584509440 |
14 | 147198472495020 |
15 | 10606175914819584 |
16 | 992340657705109416 |
17 | 120567366227960791040 |
18 | 19023173201224270401428 |
19 | 3897937005297330777227264 |
[1,2,5,16,66,352,2431,21760,252586,3803648, 74327145,1885102080,62062015500,2652584509440, 147198472495020,10606175914819584, 992340657705109416,120567366227960791040, 19023173201224270401428,3897937005297330777227264] |