n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 27 |
6 | 83 |
7 | 277 |
8 | 1015 |
9 | 4007 |
10 | 17047 |
11 | 77451 |
12 | 374889 |
13 | 1923168 |
14 | 10427250 |
15 | 59544957 |
16 | 357236992 |
17 | 2245822801 |
18 | 14762969601 |
19 | 101264286082 |
20 | 723499803180 |
21 | 5375063821727 |
22 | 41459660565329 |
23 | 331546282841906 |
24 | 2745163969235517 |
25 | 23505333233440927 |
26 | 207895424692608432 |
[1,1,2,4,10,27,83,277,1015,4007,17047,77451, 374889,1923168,10427250,59544957,357236992, 2245822801,14762969601,101264286082,723499803180, 5375063821727,41459660565329,331546282841906, 2745163969235517,23505333233440927, 207895424692608432] |