n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 11 |
5 | 28 |
6 | 68 |
7 | 169 |
8 | 470 |
9 | 1276 |
10 | 3395 |
11 | 9016 |
12 | 25736 |
13 | 71785 |
14 | 197084 |
15 | 543136 |
16 | 1562987 |
17 | 4441888 |
18 | 12490268 |
19 | 35118241 |
20 | 102094436 |
21 | 293497252 |
22 | 836212259 |
23 | 2384733976 |
24 | 6972232316 |
25 | 20220310225 |
26 | 58240787582 |
27 | 167689305760 |
28 | 493029967907 |
29 | 1438787149228 |
[1,2,4,11,28,68,169,470,1276,3395,9016,25736, 71785,197084,543136,1562987,4441888,12490268, 35118241,102094436,293497252,836212259,2384733976, 6972232316,20220310225,58240787582,167689305760, 493029967907,1438787149228] |