n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 23 |
4 | 78 |
5 | 264 |
6 | 895 |
7 | 3034 |
8 | 10286 |
9 | 34872 |
10 | 118225 |
11 | 400813 |
12 | 1358859 |
13 | 4606881 |
14 | 15618510 |
15 | 52950761 |
16 | 179516682 |
17 | 608607667 |
18 | 2063336333 |
19 | 6995240208 |
20 | 23715661274 |
21 | 80402183905 |
22 | 272584057514 |
23 | 924129977596 |
24 | 3133038018732 |
25 | 10621803712455 |
26 | 36010643162123 |
[1,2,7,23,78,264,895,3034,10286,34872,118225, 400813,1358859,4606881,15618510,52950761, 179516682,608607667,2063336333,6995240208, 23715661274,80402183905,272584057514,924129977596, 3133038018732,10621803712455,36010643162123] |