n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 34 |
5 | 120 |
6 | 434 |
7 | 1597 |
8 | 5949 |
9 | 22363 |
10 | 84655 |
11 | 322245 |
12 | 1232205 |
13 | 4729453 |
14 | 18210279 |
15 | 70307546 |
16 | 272087770 |
17 | 1055139408 |
18 | 4099200524 |
19 | 15951053566 |
20 | 62159391150 |
21 | 242542955378 |
22 | 947504851414 |
23 | 3705431067156 |
24 | 14505084243860 |
25 | 56831711106496 |
26 | 222853334131080 |
[0,1,3,10,34,120,434,1597,5949,22363,84655,322245, 1232205,4729453,18210279,70307546,272087770, 1055139408,4099200524,15951053566,62159391150, 242542955378,947504851414,3705431067156, 14505084243860,56831711106496,222853334131080] |