n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 26 |
5 | 96 |
6 | 356 |
7 | 1331 |
8 | 5014 |
9 | 19006 |
10 | 72412 |
11 | 277058 |
12 | 1063856 |
13 | 4097510 |
14 | 15823432 |
15 | 61245987 |
16 | 237536326 |
17 | 922906150 |
18 | 3591500972 |
19 | 13996328322 |
20 | 54614894396 |
21 | 213360770840 |
22 | 834409399672 |
23 | 3266370155262 |
24 | 12797894251276 |
25 | 50184309630196 |
26 | 196936674150296 |
[1,1,2,7,26,96,356,1331,5014,19006,72412,277058, 1063856,4097510,15823432,61245987,237536326, 922906150,3591500972,13996328322,54614894396, 213360770840,834409399672,3266370155262, 12797894251276,50184309630196,196936674150296] |