n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 10 |
5 | 37 |
6 | 146 |
7 | 602 |
8 | 2563 |
9 | 11181 |
10 | 49720 |
11 | 224540 |
12 | 1027038 |
13 | 4748042 |
14 | 22150519 |
15 | 104146733 |
16 | 493012682 |
17 | 2347796965 |
18 | 11239697816 |
19 | 54061835288 |
20 | 261130778516 |
21 | 1266125122956 |
22 | 6160158505040 |
23 | 30065608532008 |
24 | 147161532388934 |
[1,1,3,10,37,146,602,2563,11181,49720,224540, 1027038,4748042,22150519,104146733,493012682, 2347796965,11239697816,54061835288,261130778516, 1266125122956,6160158505040,30065608532008, 147161532388934] |