n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 1 |
4 | 4 |
5 | 4 |
6 | 11 |
7 | 15 |
8 | 43 |
9 | 77 |
10 | 199 |
11 | 423 |
12 | 1080 |
13 | 2514 |
14 | 6355 |
15 | 15529 |
16 | 39429 |
17 | 98875 |
18 | 252551 |
19 | 643133 |
20 | 1653677 |
21 | 4254070 |
22 | 11005241 |
23 | 28518931 |
24 | 74179434 |
25 | 193328017 |
26 | 505236093 |
27 | 1322919905 |
28 | 3471492272 |
29 | 9125743338 |
[1,2,1,4,4,11,15,43,77,199,423,1080,2514,6355, 15529,39429,98875,252551,643133,1653677,4254070, 11005241,28518931,74179434,193328017,505236093, 1322919905,3471492272,9125743338] |