n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 10 |
5 | 27 |
6 | 66 |
7 | 181 |
8 | 470 |
9 | 1263 |
10 | 3310 |
11 | 8767 |
12 | 22980 |
13 | 60449 |
14 | 158354 |
15 | 415353 |
16 | 1087690 |
17 | 2849675 |
18 | 7461318 |
19 | 19539429 |
20 | 51156950 |
21 | 133944931 |
22 | 350677822 |
23 | 918123935 |
24 | 2403693960 |
25 | 6293050657 |
26 | 16475457986 |
27 | 43133566061 |
[1,2,5,10,27,66,181,470,1263,3310,8767,22980, 60449,158354,415353,1087690,2849675,7461318, 19539429,51156950,133944931,350677822,918123935, 2403693960,6293050657,16475457986,43133566061] |