n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 26 |
4 | 126 |
5 | 742 |
6 | 4986 |
7 | 37942 |
8 | 321502 |
9 | 3026150 |
10 | 31198206 |
11 | 351179182 |
12 | 4282131354 |
13 | 56334933358 |
14 | 795191463982 |
15 | 12001157392246 |
16 | 192825757504222 |
17 | 3288240179785318 |
18 | 59314678786251486 |
19 | 1128751491248706814 |
20 | 22599321692994969886 |
21 | 474961934284902165190 |
22 | 10454818842695667265942 |
[1,2,6,26,126,742,4986,37942,321502,3026150, 31198206,351179182,4282131354,56334933358, 795191463982,12001157392246,192825757504222, 3288240179785318,59314678786251486, 1128751491248706814,22599321692994969886, 474961934284902165190,10454818842695667265942] |