n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 6 |
6 | 19 |
7 | 43 |
8 | 120 |
9 | 307 |
10 | 866 |
11 | 2336 |
12 | 6588 |
13 | 18373 |
14 | 52119 |
15 | 147700 |
16 | 422016 |
17 | 1207477 |
18 | 3471067 |
19 | 9999135 |
20 | 28893560 |
21 | 83665729 |
22 | 242826187 |
23 | 706074369 |
24 | 2056870697 |
25 | 6001555275 |
26 | 17538335077 |
27 | 51323792789 |
28 | 150390053432 |
29 | 441210664337 |
30 | 1295886453860 |
31 | 3810208448847 |
32 | 11214076720061 |
33 | 33035788241735 |
[1,1,1,4,6,19,43,120,307,866,2336,6588,18373, 52119,147700,422016,1207477,3471067,9999135, 28893560,83665729,242826187,706074369,2056870697, 6001555275,17538335077,51323792789,150390053432, 441210664337,1295886453860,3810208448847, 11214076720061,33035788241735] |