n | a(n) |
---|---|
2 | 1 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 17 |
7 | 44 |
8 | 133 |
9 | 404 |
10 | 1319 |
11 | 4392 |
12 | 15114 |
13 | 52796 |
14 | 187410 |
15 | 671848 |
16 | 2430509 |
17 | 8852584 |
18 | 32438603 |
19 | 119463056 |
20 | 441926206 |
21 | 1641246060 |
22 | 6117011262 |
23 | 22871513128 |
24 | 85766691938 |
25 | 322479555096 |
26 | 1215493792902 |
27 | 4591852445104 |
28 | 17383416640308 |
29 | 65937045017304 |
[1,1,3,6,17,44,133,404,1319,4392,15114,52796, 187410,671848,2430509,8852584,32438603,119463056, 441926206,1641246060,6117011262,22871513128, 85766691938,322479555096,1215493792902, 4591852445104,17383416640308,65937045017304] |