n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 21 |
6 | 77 |
7 | 292 |
8 | 1143 |
9 | 4592 |
10 | 18821 |
11 | 78364 |
12 | 330512 |
13 | 1409149 |
14 | 6063526 |
15 | 26298592 |
16 | 114849110 |
17 | 504595293 |
18 | 2228824203 |
19 | 9891723114 |
20 | 44087704836 |
21 | 197255893945 |
22 | 885630834120 |
23 | 3988872011820 |
24 | 18017892014655 |
[0,1,1,2,6,21,77,292,1143,4592,18821,78364,330512, 1409149,6063526,26298592,114849110,504595293, 2228824203,9891723114,44087704836,197255893945, 885630834120,3988872011820,18017892014655] |