n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 8 |
5 | 26 |
6 | 84 |
7 | 297 |
8 | 1066 |
9 | 3976 |
10 | 15093 |
11 | 58426 |
12 | 229189 |
13 | 910127 |
14 | 3649165 |
15 | 14756491 |
16 | 60103220 |
17 | 246357081 |
18 | 1015406251 |
19 | 4205873378 |
20 | 17497745509 |
21 | 73084575666 |
22 | 306352303774 |
23 | 1288328048865 |
24 | 5433980577776 |
25 | 22982025183983 |
[0,1,1,3,8,26,84,297,1066,3976,15093,58426,229189, 910127,3649165,14756491,60103220,246357081, 1015406251,4205873378,17497745509,73084575666, 306352303774,1288328048865,5433980577776, 22982025183983] |