n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 30 |
5 | 170 |
6 | 1242 |
7 | 9534 |
8 | 86118 |
9 | 797778 |
10 | 8327410 |
11 | 88438966 |
12 | 1032534190 |
13 | 12233231738 |
14 | 156832510922 |
15 | 2038914853870 |
16 | 28368720701302 |
17 | 400233587440290 |
18 | 5994141844357346 |
19 | 91033137985948774 |
20 | 1458360235236325182 |
21 | 23691777860254217802 |
22 | 403933868741833240506 |
[1,1,2,6,30,170,1242,9534,86118,797778,8327410, 88438966,1032534190,12233231738,156832510922, 2038914853870,28368720701302,400233587440290, 5994141844357346,91033137985948774, 1458360235236325182,23691777860254217802, 403933868741833240506] |