n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 8 |
4 | 38 |
5 | 201 |
6 | 1164 |
7 | 7188 |
8 | 46576 |
9 | 313823 |
10 | 2185642 |
11 | 15668473 |
12 | 115281167 |
13 | 868757478 |
14 | 6696711294 |
15 | 52757324970 |
16 | 424590429862 |
17 | 3490344692094 |
18 | 29310836035090 |
19 | 251525003170386 |
20 | 2206548594680093 |
21 | 19798923287905907 |
22 | 181797157100106619 |
[1,1,2,8,38,201,1164,7188,46576,313823,2185642, 15668473,115281167,868757478,6696711294, 52757324970,424590429862,3490344692094, 29310836035090,251525003170386,2206548594680093, 19798923287905907,181797157100106619] |