n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 13 |
5 | 57 |
6 | 265 |
7 | 1273 |
8 | 6281 |
9 | 31634 |
10 | 161985 |
11 | 840795 |
12 | 4413937 |
13 | 23395376 |
14 | 125028541 |
15 | 672958929 |
16 | 3644868105 |
17 | 19850452482 |
18 | 108639736105 |
19 | 597190462341 |
20 | 3295737021241 |
21 | 18253432801480 |
22 | 101425665527825 |
23 | 565249069709027 |
24 | 3158734991846065 |
[1,0,1,3,13,57,265,1273,6281,31634,161985,840795, 4413937,23395376,125028541,672958929,3644868105, 19850452482,108639736105,597190462341, 3295737021241,18253432801480,101425665527825, 565249069709027,3158734991846065] |